[INFO] cloning repository https://github.com/tetsuzawa/strace-from-scratch-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tetsuzawa/strace-from-scratch-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsuzawa%2Fstrace-from-scratch-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsuzawa%2Fstrace-from-scratch-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b60dbd65f1eba5c372f379ee1031a3634be4be83
[INFO] checking tetsuzawa/strace-from-scratch-in-rust against master#0c292c9667f1b202a9150d58bdd2e89e3e803996 for pr-92285
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsuzawa%2Fstrace-from-scratch-in-rust" "/workspace/builds/worker-40/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-40/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tetsuzawa/strace-from-scratch-in-rust on toolchain 0c292c9667f1b202a9150d58bdd2e89e3e803996
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0c292c9667f1b202a9150d58bdd2e89e3e803996" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tetsuzawa/strace-from-scratch-in-rust
[INFO] finished tweaking git repo https://github.com/tetsuzawa/strace-from-scratch-in-rust
[INFO] tweaked toml for git repo https://github.com/tetsuzawa/strace-from-scratch-in-rust written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] crate git repo https://github.com/tetsuzawa/strace-from-scratch-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0c292c9667f1b202a9150d58bdd2e89e3e803996" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+0c292c9667f1b202a9150d58bdd2e89e3e803996" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae6398d2bcf7107b9b86cf8af75d59ce6c8dd7c59f6d9f130606825de3a30bc8
[INFO] running `Command { std: "docker" "start" "-a" "ae6398d2bcf7107b9b86cf8af75d59ce6c8dd7c59f6d9f130606825de3a30bc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae6398d2bcf7107b9b86cf8af75d59ce6c8dd7c59f6d9f130606825de3a30bc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae6398d2bcf7107b9b86cf8af75d59ce6c8dd7c59f6d9f130606825de3a30bc8", kill_on_drop: false }`
[INFO] [stdout] ae6398d2bcf7107b9b86cf8af75d59ce6c8dd7c59f6d9f130606825de3a30bc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+0c292c9667f1b202a9150d58bdd2e89e3e803996" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af96f4e13c3ce255ab66290d5cd1bdd72837573ad64616a9e2163af570f14b08
[INFO] running `Command { std: "docker" "start" "-a" "af96f4e13c3ce255ab66290d5cd1bdd72837573ad64616a9e2163af570f14b08", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking strace-from-scratch-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `nix::sys::signal::Signal`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nix::sys::signal::Signal;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::ops::Add;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::sys::signal::Signal`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nix::sys::signal::Signal;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 e => std::io::Error::from_raw_os_error(e as i32),
[INFO] [stdout]    |                 - matches any value
[INFO] [stdout] 46 |                 _ => std::io::Error::new(std::io::ErrorKind::Other, "unknown PTRACE_TRACEME error"),
[INFO] [stdout]    |                 ^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::ops::Add;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 e => std::io::Error::from_raw_os_error(e as i32),
[INFO] [stdout]    |                 - matches any value
[INFO] [stdout] 46 |                 _ => std::io::Error::new(std::io::ErrorKind::Other, "unknown PTRACE_TRACEME error"),
[INFO] [stdout]    |                 ^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 07s
[INFO] running `Command { std: "docker" "inspect" "af96f4e13c3ce255ab66290d5cd1bdd72837573ad64616a9e2163af570f14b08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af96f4e13c3ce255ab66290d5cd1bdd72837573ad64616a9e2163af570f14b08", kill_on_drop: false }`
[INFO] [stdout] af96f4e13c3ce255ab66290d5cd1bdd72837573ad64616a9e2163af570f14b08