[INFO] cloning repository https://github.com/simotin13/binary_tracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/simotin13/binary_tracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimotin13%2Fbinary_tracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimotin13%2Fbinary_tracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d42472235fb092f3ae699fa4babe9fa19d6c72f
[INFO] checking simotin13/binary_tracer against try#51000a35bc99aeffdc092bf2226ab562eedb9eff for pr-135899
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimotin13%2Fbinary_tracer" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/simotin13/binary_tracer on toolchain 51000a35bc99aeffdc092bf2226ab562eedb9eff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/simotin13/binary_tracer
[INFO] finished tweaking git repo https://github.com/simotin13/binary_tracer
[INFO] tweaked toml for git repo https://github.com/simotin13/binary_tracer written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/simotin13/binary_tracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c31d55ca862f841dbad89b22fb6445c66fd012bac563735a9e7742b8b09eebd3
[INFO] running `Command { std: "docker" "start" "-a" "c31d55ca862f841dbad89b22fb6445c66fd012bac563735a9e7742b8b09eebd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c31d55ca862f841dbad89b22fb6445c66fd012bac563735a9e7742b8b09eebd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c31d55ca862f841dbad89b22fb6445c66fd012bac563735a9e7742b8b09eebd3", kill_on_drop: false }`
[INFO] [stdout] c31d55ca862f841dbad89b22fb6445c66fd012bac563735a9e7742b8b09eebd3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 969c7cf482acd90a12c62bf374549858e2c6b80c396b511fd9b8eb132b63685c
[INFO] running `Command { std: "docker" "start" "-a" "969c7cf482acd90a12c62bf374549858e2c6b80c396b511fd9b8eb132b63685c", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking binary_tracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Stdio`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::process::Stdio;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Events`, `Poll`, and `Token`
[INFO] [stdout]  --> src/gdbmi.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mio::{Events, Poll, Token};
[INFO] [stdout]   |           ^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Stdio`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::process::Stdio;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Events`, `Poll`, and `Token`
[INFO] [stdout]  --> src/gdbmi.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mio::{Events, Poll, Token};
[INFO] [stdout]   |           ^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf_dword`
[INFO] [stdout]    --> src/elf.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut buf_dword: [u8; 8] = Default::default();
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buf_dword`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf_dword`
[INFO] [stdout]    --> src/elf.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut buf_dword: [u8; 8] = Default::default();
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buf_dword`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/elf.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut buf_dword: [u8; 8] = Default::default();
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |             ELFOSABI_NONE => println!("  OS/ABI:{:28}UNIX - System V", ""),
[INFO] [stdout]     |             ------------- matches all the relevant values
[INFO] [stdout] 227 |             ELFOSABI_SYSV => println!("  OS/ABI:{:28}Alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 230 |             ELFOSABI_GNU => println!("  OS/ABI:{:28}Object uses GNU ELF extensions.", ""),
[INFO] [stdout]     |             ------------ matches all the relevant values
[INFO] [stdout] 231 |             ELFOSABI_LINUX => println!("  OS/ABI:{:28}Compatibility alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/elf.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut buf_dword: [u8; 8] = Default::default();
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |             ELFOSABI_NONE => println!("  OS/ABI:{:28}UNIX - System V", ""),
[INFO] [stdout]     |             ------------- matches all the relevant values
[INFO] [stdout] 227 |             ELFOSABI_SYSV => println!("  OS/ABI:{:28}Alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 230 |             ELFOSABI_GNU => println!("  OS/ABI:{:28}Object uses GNU ELF extensions.", ""),
[INFO] [stdout]     |             ------------ matches all the relevant values
[INFO] [stdout] 231 |             ELFOSABI_LINUX => println!("  OS/ABI:{:28}Compatibility alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:357:13
[INFO] [stdout]     |
[INFO] [stdout] 356 |             ELFOSABI_NONE => println!("  OS/ABI:{:28}UNIX - System V", ""),
[INFO] [stdout]     |             ------------- matches all the relevant values
[INFO] [stdout] 357 |             ELFOSABI_SYSV => println!("  OS/ABI:{:28}Alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 360 |             ELFOSABI_GNU => println!("  OS/ABI:{:28}Object uses GNU ELF extensions.", ""),
[INFO] [stdout]     |             ------------ matches all the relevant values
[INFO] [stdout] 361 |             ELFOSABI_LINUX => println!("  OS/ABI:{:28}Compatibility alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gdbmi.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut proc = Command::new("gdb").
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:357:13
[INFO] [stdout]     |
[INFO] [stdout] 356 |             ELFOSABI_NONE => println!("  OS/ABI:{:28}UNIX - System V", ""),
[INFO] [stdout]     |             ------------- matches all the relevant values
[INFO] [stdout] 357 |             ELFOSABI_SYSV => println!("  OS/ABI:{:28}Alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 360 |             ELFOSABI_GNU => println!("  OS/ABI:{:28}Object uses GNU ELF extensions.", ""),
[INFO] [stdout]     |             ------------ matches all the relevant values
[INFO] [stdout] 361 |             ELFOSABI_LINUX => println!("  OS/ABI:{:28}Compatibility alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Elf32Sword` is never used
[INFO] [stdout]  --> src/elf.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Elf32Sword    = i32;
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Elf64Sword` is never used
[INFO] [stdout]   --> src/elf.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | type Elf64Sword    = i32;
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIZE_ELF32_SWORD` is never used
[INFO] [stdout]   --> src/elf.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const SIZE_ELF32_SWORD: usize   = mem::size_of::<Elf32Sword>();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIZE_ELF64_SWORD` is never used
[INFO] [stdout]   --> src/elf.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | const SIZE_ELF64_SWORD: usize   = mem::size_of::<Elf64Sword>();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ET_NUM` is never used
[INFO] [stdout]   --> src/elf.rs:65:7
[INFO] [stdout]    |
[INFO] [stdout] 65 | const ET_NUM:u16    = 5;
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `timeout` is never read
[INFO] [stdout]  --> src/gdbmi.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct GdbMi {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 8 |     target: String,
[INFO] [stdout] 9 |     timeout: u32,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gdbmi.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut proc = Command::new("gdb").
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Elf32Sword` is never used
[INFO] [stdout]  --> src/elf.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Elf32Sword    = i32;
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Elf64Sword` is never used
[INFO] [stdout]   --> src/elf.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | type Elf64Sword    = i32;
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIZE_ELF32_SWORD` is never used
[INFO] [stdout]   --> src/elf.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const SIZE_ELF32_SWORD: usize   = mem::size_of::<Elf32Sword>();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIZE_ELF64_SWORD` is never used
[INFO] [stdout]   --> src/elf.rs:23:7
[INFO] [stdout]    |
[INFO] [stdout] 23 | const SIZE_ELF64_SWORD: usize   = mem::size_of::<Elf64Sword>();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ET_NUM` is never used
[INFO] [stdout]   --> src/elf.rs:65:7
[INFO] [stdout]    |
[INFO] [stdout] 65 | const ET_NUM:u16    = 5;
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `timeout` is never read
[INFO] [stdout]  --> src/gdbmi.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct GdbMi {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 8 |     target: String,
[INFO] [stdout] 9 |     timeout: u32,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "969c7cf482acd90a12c62bf374549858e2c6b80c396b511fd9b8eb132b63685c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "969c7cf482acd90a12c62bf374549858e2c6b80c396b511fd9b8eb132b63685c", kill_on_drop: false }`
[INFO] [stdout] 969c7cf482acd90a12c62bf374549858e2c6b80c396b511fd9b8eb132b63685c