[INFO] cloning repository https://github.com/itorest/bg-process
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/itorest/bg-process" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitorest%2Fbg-process", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitorest%2Fbg-process'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32c9e90a6aa6689863f52dfb96934bf4a735538a
[INFO] testing itorest/bg-process against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitorest%2Fbg-process" "/workspace/builds/worker-106/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-106/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/itorest/bg-process on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/itorest/bg-process
[INFO] finished tweaking git repo https://github.com/itorest/bg-process
[INFO] tweaked toml for git repo https://github.com/itorest/bg-process written to /workspace/builds/worker-106/source/Cargo.toml
[INFO] crate git repo https://github.com/itorest/bg-process already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6992cf527f8369b650b213b8ea70c648e573e5e45b831eddd6ed7c4188f20ac
[INFO] running `Command { std: "docker" "start" "-a" "c6992cf527f8369b650b213b8ea70c648e573e5e45b831eddd6ed7c4188f20ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6992cf527f8369b650b213b8ea70c648e573e5e45b831eddd6ed7c4188f20ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6992cf527f8369b650b213b8ea70c648e573e5e45b831eddd6ed7c4188f20ac", kill_on_drop: false }`
[INFO] [stdout] c6992cf527f8369b650b213b8ea70c648e573e5e45b831eddd6ed7c4188f20ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3618c355e63f22f4626aa42c6331d2142ce58840f28ff132aa90a79a51bbf42
[INFO] running `Command { std: "docker" "start" "-a" "c3618c355e63f22f4626aa42c6331d2142ce58840f28ff132aa90a79a51bbf42", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bg-process v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 |     if let Ok(mut c) = Command::new("ls")
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.65s
[INFO] running `Command { std: "docker" "inspect" "c3618c355e63f22f4626aa42c6331d2142ce58840f28ff132aa90a79a51bbf42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3618c355e63f22f4626aa42c6331d2142ce58840f28ff132aa90a79a51bbf42", kill_on_drop: false }`
[INFO] [stdout] c3618c355e63f22f4626aa42c6331d2142ce58840f28ff132aa90a79a51bbf42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54ee02049253836a40a4f66499af39e3a7f2f1c48f393acaf2292e67a033f2ca
[INFO] running `Command { std: "docker" "start" "-a" "54ee02049253836a40a4f66499af39e3a7f2f1c48f393acaf2292e67a033f2ca", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bg-process v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 |     if let Ok(mut c) = Command::new("ls")
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "54ee02049253836a40a4f66499af39e3a7f2f1c48f393acaf2292e67a033f2ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54ee02049253836a40a4f66499af39e3a7f2f1c48f393acaf2292e67a033f2ca", kill_on_drop: false }`
[INFO] [stdout] 54ee02049253836a40a4f66499af39e3a7f2f1c48f393acaf2292e67a033f2ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f8fdd37acebf7bf4c8e0626e0160afffa3c68985998455d0be6eb0980527bde1
[INFO] running `Command { std: "docker" "start" "-a" "f8fdd37acebf7bf4c8e0626e0160afffa3c68985998455d0be6eb0980527bde1", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:4:15
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 4 |     if let Ok(mut c) = Command::new("ls")
[INFO] [stdout] 
[INFO] [stderr]   |               ----^
[INFO] [stderr]   |               |
[INFO] [stderr]   |               help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `bg-process` (bin "bg-process" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bg_process-d8bcbefb1b9b050f)
[INFO] running `Command { std: "docker" "inspect" "f8fdd37acebf7bf4c8e0626e0160afffa3c68985998455d0be6eb0980527bde1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8fdd37acebf7bf4c8e0626e0160afffa3c68985998455d0be6eb0980527bde1", kill_on_drop: false }`
[INFO] [stdout] f8fdd37acebf7bf4c8e0626e0160afffa3c68985998455d0be6eb0980527bde1