[INFO] cloning repository https://github.com/orowith2os/math-testing-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/orowith2os/math-testing-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Forowith2os%2Fmath-testing-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Forowith2os%2Fmath-testing-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 43c3f2f38257fe496abb1c93cff0a25cc40c51e5
[INFO] checking orowith2os/math-testing-rust against try#fa4dd1f19bfeb3fd235dc7f1406c42404436bef5 for pr-145108-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Forowith2os%2Fmath-testing-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/orowith2os/math-testing-rust
[INFO] finished tweaking git repo https://github.com/orowith2os/math-testing-rust
[INFO] tweaked toml for git repo https://github.com/orowith2os/math-testing-rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/orowith2os/math-testing-rust on toolchain fa4dd1f19bfeb3fd235dc7f1406c42404436bef5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/orowith2os/math-testing-rust 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" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f89994ba4cf16729439599538d9e7760d3f5f680e6f5d51510fdfa8acc7f32b
[INFO] running `Command { std: "docker" "start" "-a" "1f89994ba4cf16729439599538d9e7760d3f5f680e6f5d51510fdfa8acc7f32b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f89994ba4cf16729439599538d9e7760d3f5f680e6f5d51510fdfa8acc7f32b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f89994ba4cf16729439599538d9e7760d3f5f680e6f5d51510fdfa8acc7f32b", kill_on_drop: false }`
[INFO] [stdout] 1f89994ba4cf16729439599538d9e7760d3f5f680e6f5d51510fdfa8acc7f32b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00c984c02bdef5c6d8c8f0c7dc8c7528cf146d11ac3f9e43b6c27b635a08883f
[INFO] running `Command { std: "docker" "start" "-a" "00c984c02bdef5c6d8c8f0c7dc8c7528cf146d11ac3f9e43b6c27b635a08883f", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking math-testing-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/fibonacci.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn fibonacci(mut num: usize) {
[INFO] [stdout]   |                  ----^^^
[INFO] [stdout]   |                  |
[INFO] [stdout]   |                  help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/fibonacci.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn fibonacci(mut num: usize) {
[INFO] [stdout]   |                  ----^^^
[INFO] [stdout]   |                  |
[INFO] [stdout]   |                  help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.58s
[INFO] running `Command { std: "docker" "inspect" "00c984c02bdef5c6d8c8f0c7dc8c7528cf146d11ac3f9e43b6c27b635a08883f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00c984c02bdef5c6d8c8f0c7dc8c7528cf146d11ac3f9e43b6c27b635a08883f", kill_on_drop: false }`
[INFO] [stdout] 00c984c02bdef5c6d8c8f0c7dc8c7528cf146d11ac3f9e43b6c27b635a08883f