With rustgdb:
(gdb) x/75i drop::main
0x7d90 <drop::main>: sub rsp,0xa8
0x7d97 <drop::main+7>: lea rax,[rip+0x4bc0a] # 0x539a8
0x7d9e <drop::main+14>: mov ecx,0x8
0x7da3 <drop::main+19>: mov edx,ecx
0x7da5 <drop::main+21>: lea rdi,[rsp+0x18]
0x7daa <drop::main+26>: mov rsi,rax
0x7dad <drop::main+29>: call 0xa760 <<alloc::string::String as core::convert::From<&'a str>>::from>
0x7db2 <drop::main+34>: jmp 0x7dc3 <drop::main+51>
0x7db4 <drop::main+36>: mov rdi,QWORD PTR [rsp+0x98]
0x7dbc <drop::main+44>: call 0x6860 <_Unwind_Resume@plt>
0x7dc1 <drop::main+49>: ud2
0x7dc3 <drop::main+51>: mov rax,QWORD PTR [rsp+0x28]
0x7dc8 <drop::main+56>: mov QWORD PTR [rsp+0x10],rax
0x7dcd <drop::main+61>: movups xmm0,XMMWORD PTR [rsp+0x18]
0x7dd2 <drop::main+66>: movaps XMMWORD PTR [rsp],xmm0
0x7dd6 <drop::main+70>: lea rsi,[rip+0x4bbd3] # 0x539b0
0x7ddd <drop::main+77>: lea rdi,[rsp+0x50]
0x7de2 <drop::main+82>: mov edx,0xb
0x7de7 <drop::main+87>: call 0xa760 <<alloc::string::String as core::convert::From<&'a str>>::from>
0x7dec <drop::main+92>: jmp 0x7dee <drop::main+94>
0x7dee <drop::main+94>: mov rax,QWORD PTR [rsp+0x60]
0x7df3 <drop::main+99>: mov QWORD PTR [rsp+0x40],rax
0x7df8 <drop::main+104>: movups xmm0,XMMWORD PTR [rsp+0x50]
0x7dfd <drop::main+109>: movaps XMMWORD PTR [rsp+0x30],xmm0
0x7e02 <drop::main+114>: lea rsi,[rip+0x25fe5f] # 0x267c68
0x7e09 <drop::main+121>: lea rcx,[rip+0x4bbc8] # 0x539d8
0x7e10 <drop::main+128>: xor edx,edx
0x7e12 <drop::main+130>: mov r8d,edx
0x7e15 <drop::main+133>: lea rdi,[rsp+0x68]
0x7e1a <drop::main+138>: mov edx,0x1
0x7e1f <drop::main+143>: call 0x6b50 <core::fmt::Arguments::new_v1>
0x7e24 <drop::main+148>: jmp 0x7e30 <drop::main+160>
0x7e26 <drop::main+150>: mov rdi,rsp
0x7e29 <drop::main+153>: call 0x9930 <core::ptr::drop_in_place>
0x7e2e <drop::main+158>: jmp 0x7db4 <drop::main+36>
0x7e30 <drop::main+160>: lea rax,[rip+0x7079] # 0xeeb0 <std::io::stdio::_print>
0x7e37 <drop::main+167>: lea rdi,[rsp+0x68]
0x7e3c <drop::main+172>: call rax
0x7e3e <drop::main+174>: jmp 0x7e4c <drop::main+188>
0x7e40 <drop::main+176>: lea rdi,[rsp+0x30]
0x7e45 <drop::main+181>: call 0x9930 <core::ptr::drop_in_place>
0x7e4a <drop::main+186>: jmp 0x7e26 <drop::main+150>
0x7e4c <drop::main+188>: lea rdi,[rsp+0x30]
0x7e51 <drop::main+193>: call 0x9930 <core::ptr::drop_in_place>
0x7e56 <drop::main+198>: jmp 0x7e58 <drop::main+200>
0x7e58 <drop::main+200>: mov rdi,rsp
0x7e5b <drop::main+203>: call 0x9930 <core::ptr::drop_in_place>
0x7e60 <drop::main+208>: add rsp,0xa8
0x7e67 <drop::main+215>: ret
0x7e68 <drop::main+216>: mov ecx,edx
0x7e6a <drop::main+218>: mov QWORD PTR [rsp+0x98],rax
0x7e72 <drop::main+226>: mov DWORD PTR [rsp+0xa0],ecx
0x7e79 <drop::main+233>: jmp 0x7e26 <drop::main+150>
0x7e7b <drop::main+235>: mov ecx,edx
0x7e7d <drop::main+237>: mov QWORD PTR [rsp+0x98],rax
0x7e85 <drop::main+245>: mov DWORD PTR [rsp+0xa0],ecx
0x7e8c <drop::main+252>: jmp 0x7e40 <drop::main+176>With r2:
[0x00006910]> s sym.drop::main::h68a0126b05e2e2db
[0x00007d90]> af
[0x00007d90]> pdf
┌ (fcn) sym.drop::main::h68a0126b05e2e2db 179
│ sym.drop::main::h68a0126b05e2e2db ();
│ ; var int local_10h @ rsp+0x10
│ ; var int local_18h @ rsp+0x18
│ ; var int local_28h @ rsp+0x28
│ ; var int local_30h @ rsp+0x30
│ ; var int local_40h @ rsp+0x40
│ ; var int local_50h @ rsp+0x50
│ ; var int local_60h @ rsp+0x60
│ ; var int local_68h @ rsp+0x68
│ 0x00007d90 sub rsp, 0xa8
│ 0x00007d97 lea rax, str.my_stuffother_stuffCustomSmartPointers_created.__called__Result::unwrap____on_an__Err__value: ; 0x539a8 ; "my stuffother stuffCustomSmartPointers created.\ncalled `Result::unwrap()` on an `Err` value: "
│ 0x00007d9e mov ecx, 8
│ 0x00007da3 mov edx, ecx
│ 0x00007da5 lea rdi, [local_18h] ; 0x18
│ 0x00007daa mov rsi, rax
│ 0x00007dad call sym._alloc::string::String_as_core::convert::From___a_str__::from::h1bc88c722bc1d039
│ ┌─< 0x00007db2 jmp 0x7dc3
..
│ ╎│ ; CODE XREF from sym.drop::main::h68a0126b05e2e2db (0x7db2)
│ ╎└─> 0x00007dc3 mov rax, qword [local_28h] ; [0x28:8]=0x3f09a8 ; '('
│ ╎ 0x00007dc8 mov qword [local_10h], rax
│ ╎ 0x00007dcd movups xmm0, xmmword [local_18h] ; [0x18:16]=-1
│ ╎ 0x00007dd2 movaps xmmword [rsp], xmm0
│ ╎ 0x00007dd6 lea rsi, [0x000539b0] ; "other stuffCustomSmartPointers created.\ncalled `Result::unwrap()` on an `Err` value: "
│ ╎ 0x00007ddd lea rdi, [local_50h] ; "@" ; 0x50 ; 'P'
│ ╎ 0x00007de2 mov edx, 0xb
│ ╎ 0x00007de7 call sym._alloc::string::String_as_core::convert::From___a_str__::from::h1bc88c722bc1d039
│ ╎┌─< 0x00007dec jmp 0x7dee
│ ╎│ ; CODE XREF from sym.drop::main::h68a0126b05e2e2db (0x7dec)
│ ╎└─> 0x00007dee mov rax, qword [local_60h] ; [0x60:8]=0x230 ; '`'
│ ╎ 0x00007df3 mov qword [local_40h], rax
│ ╎ 0x00007df8 movups xmm0, xmmword [local_50h] ; [0x50:16]=-1 ; 'P'
│ ╎ 0x00007dfd movaps xmmword [local_30h], xmm0
│ ╎ 0x00007e02 lea rsi, [0x00267c68]
│ ╎ 0x00007e09 lea rcx, [0x000539d8] ; "called `Result::unwrap()` on an `Err` value: "
│ ╎ 0x00007e10 xor edx, edx
│ ╎ 0x00007e12 mov r8d, edx
│ ╎ 0x00007e15 lea rdi, [local_68h] ; 0x68 ; 'h'
│ ╎ 0x00007e1a mov edx, 1
│ ╎ 0x00007e1f call sym.core::fmt::Arguments::new_v1::h8146c9ba413f1644
│ ╎┌─< 0x00007e24 jmp 0x7e30
..
│ ╎ │ ; CODE XREF from sym.drop::main::h68a0126b05e2e2db (0x7e24)
│ ╎ └─> 0x00007e30 lea rax, sym.std::io::stdio::_print::hacb4478e3e4d6959 ; 0xeeb0 ; "AVSH\x81\xec\xc8"
│ ╎ 0x00007e37 lea rdi, [local_68h] ; 0x68 ; 'h'
│ ╎ 0x00007e3c call rax
│ ╎ ┌─< 0x00007e3e jmp 0x7e4c
..
│ │ ; CODE XREF from sym.drop::main::h68a0126b05e2e2db (0x7e3e)
│ └─> 0x00007e4c lea rdi, [local_30h] ; sym.je_tsd_tls ; 0x30
│ 0x00007e51 call sym.core::ptr::drop_in_place::h2f8113dbca93872b
│ ┌─< 0x00007e56 jmp 0x7e58
│ │ ; CODE XREF from sym.drop::main::h68a0126b05e2e2db (0x7e56)
│ └─> 0x00007e58 mov rdi, rsp
│ 0x00007e5b call sym.core::ptr::drop_in_place::h2f8113dbca93872b
│ 0x00007e60 add rsp, 0xa8
└ 0x00007e67 retWith pdr:
[0x00007d90]> pdr
┌ (fcn) sym.drop::main::h68a0126b05e2e2db 179
│ sym.drop::main::h68a0126b05e2e2db ();
│ ; var int local_10h @ rsp+0x10
│ ; var int local_18h @ rsp+0x18
│ ; var int local_28h @ rsp+0x28
│ ; var int local_30h @ rsp+0x30
│ ; var int local_40h @ rsp+0x40
│ ; var int local_50h @ rsp+0x50
│ ; var int local_60h @ rsp+0x60
│ ; var int local_68h @ rsp+0x68
│ 0x00007d90 sub rsp, 0xa8
│ 0x00007d97 lea rax, str.my_stuffother_stuffCustomSmartPointers_created.__called__Result::unwrap____on_an__Err__value: ; 0x539a8 ; "my stuffother stuffCustomSmartPointers created.\ncalled `Result::unwrap()` on an `Err` value: "
│ 0x00007d9e mov ecx, 8
│ 0x00007da3 mov edx, ecx
│ 0x00007da5 lea rdi, [local_18h] ; 0x18
│ 0x00007daa mov rsi, rax
│ 0x00007dad call sym._alloc::string::String_as_core::convert::From___a_str__::from::h1bc88c722bc1d039
│ 0x00007db2 jmp 0x7dc3
| ----------- true: 0x00007dc3
│ ; CODE XREF from sym.drop::main::h68a0126b05e2e2db (0x7db2)
│ 0x00007dc3 mov rax, qword [local_28h] ; [0x28:8]=0x3f09a8 ; '('
│ 0x00007dc8 mov qword [local_10h], rax
│ 0x00007dcd movups xmm0, xmmword [local_18h] ; [0x18:16]=-1
│ 0x00007dd2 movaps xmmword [rsp], xmm0
│ 0x00007dd6 lea rsi, [0x000539b0] ; "other stuffCustomSmartPointers created.\ncalled `Result::unwrap()` on an `Err` value: "
│ 0x00007ddd lea rdi, [local_50h] ; "@" ; 0x50 ; 'P'
│ 0x00007de2 mov edx, 0xb
│ 0x00007de7 call sym._alloc::string::String_as_core::convert::From___a_str__::from::h1bc88c722bc1d039
│ 0x00007dec jmp 0x7dee
| ----------- true: 0x00007dee
│ ; CODE XREF from sym.drop::main::h68a0126b05e2e2db (0x7dec)
│ 0x00007dee mov rax, qword [local_60h] ; [0x60:8]=0x230 ; '`'
│ 0x00007df3 mov qword [local_40h], rax
│ 0x00007df8 movups xmm0, xmmword [local_50h] ; [0x50:16]=-1 ; 'P'
│ 0x00007dfd movaps xmmword [local_30h], xmm0
│ 0x00007e02 lea rsi, [0x00267c68]
│ 0x00007e09 lea rcx, [0x000539d8] ; "called `Result::unwrap()` on an `Err` value: "
│ 0x00007e10 xor edx, edx
│ 0x00007e12 mov r8d, edx
│ 0x00007e15 lea rdi, [local_68h] ; 0x68 ; 'h'
│ 0x00007e1a mov edx, 1
│ 0x00007e1f call sym.core::fmt::Arguments::new_v1::h8146c9ba413f1644
│ 0x00007e24 jmp 0x7e30
| ----------- true: 0x00007e30
│ ; CODE XREF from sym.drop::main::h68a0126b05e2e2db (0x7e24)
│ 0x00007e30 lea rax, sym.std::io::stdio::_print::hacb4478e3e4d6959 ; 0xeeb0 ; "AVSH\x81\xec\xc8"
│ 0x00007e37 lea rdi, [local_68h] ; 0x68 ; 'h'
│ 0x00007e3c call rax
│ 0x00007e3e jmp 0x7e4c
| ----------- true: 0x00007e4c
│ ; CODE XREF from sym.drop::main::h68a0126b05e2e2db (0x7e3e)
│ 0x00007e4c lea rdi, [local_30h] ; sym.je_tsd_tls ; 0x30
│ 0x00007e51 call sym.core::ptr::drop_in_place::h2f8113dbca93872b
│ 0x00007e56 jmp 0x7e58
| ----------- true: 0x00007e58
│ ; CODE XREF from sym.drop::main::h68a0126b05e2e2db (0x7e56)
│ 0x00007e58 mov rdi, rsp
│ 0x00007e5b call sym.core::ptr::drop_in_place::h2f8113dbca93872b
│ 0x00007e60 add rsp, 0xa8
└ 0x00007e67 ret