[INFO] cloning repository https://github.com/filedesless/multiplication
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/filedesless/multiplication" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffiledesless%2Fmultiplication", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffiledesless%2Fmultiplication'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b19fe77a38fc7ace1774ebb9b5eacc2dbbfdb5c6
[INFO] checking filedesless/multiplication against try#c8085cfed34c45021fc8f66d073f6394b3e35431 for pr-148939
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffiledesless%2Fmultiplication" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/filedesless/multiplication
[INFO] finished tweaking git repo https://github.com/filedesless/multiplication
[INFO] tweaked toml for git repo https://github.com/filedesless/multiplication written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/filedesless/multiplication on toolchain c8085cfed34c45021fc8f66d073f6394b3e35431
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/filedesless/multiplication 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" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b0a1a349a82757ec8235ed613c00d2b43302260b45af07192a370778b2f68bb
[INFO] running `Command { std: "docker" "start" "-a" "7b0a1a349a82757ec8235ed613c00d2b43302260b45af07192a370778b2f68bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b0a1a349a82757ec8235ed613c00d2b43302260b45af07192a370778b2f68bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b0a1a349a82757ec8235ed613c00d2b43302260b45af07192a370778b2f68bb", kill_on_drop: false }`
[INFO] [stdout] 7b0a1a349a82757ec8235ed613c00d2b43302260b45af07192a370778b2f68bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a04324cdbb44e9e55e69d4d295d34d67d27299ffc370943f2940067a21a29673
[INFO] running `Command { std: "docker" "start" "-a" "a04324cdbb44e9e55e69d4d295d34d67d27299ffc370943f2940067a21a29673", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking multiplication v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `print` is never used
[INFO] [stdout]   --> src/poly.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn print<R: Ring>(poly: &[R]) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eq` is never used
[INFO] [stdout]   --> src/poly.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn eq<R: Ring>(x: &[R], y: &[R]) -> bool {
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print` is never used
[INFO] [stdout]   --> src/poly.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn print<R: Ring>(poly: &[R]) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eq` is never used
[INFO] [stdout]   --> src/poly.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn eq<R: Ring>(x: &[R], y: &[R]) -> bool {
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.79s
[INFO] running `Command { std: "docker" "inspect" "a04324cdbb44e9e55e69d4d295d34d67d27299ffc370943f2940067a21a29673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a04324cdbb44e9e55e69d4d295d34d67d27299ffc370943f2940067a21a29673", kill_on_drop: false }`
[INFO] [stdout] a04324cdbb44e9e55e69d4d295d34d67d27299ffc370943f2940067a21a29673