[INFO] cloning repository https://github.com/jbruws/wordmash
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jbruws/wordmash" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbruws%2Fwordmash", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbruws%2Fwordmash'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4aa240da3d90e0afbf884de47c841db6a4c613e5
[INFO] checking jbruws/wordmash against try#6284d7b4bd27983dba388146648ab844ca7d032f for pr-152971
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbruws%2Fwordmash" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jbruws/wordmash
[INFO] finished tweaking git repo https://github.com/jbruws/wordmash
[INFO] tweaked toml for git repo https://github.com/jbruws/wordmash written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jbruws/wordmash on toolchain 6284d7b4bd27983dba388146648ab844ca7d032f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jbruws/wordmash 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" "+6284d7b4bd27983dba388146648ab844ca7d032f" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9991c9ab374aec8aa7780c7be35367d7d4cdf35db15da7140bbf6dc31981b2c7
[INFO] running `Command { std: "docker" "start" "-a" "9991c9ab374aec8aa7780c7be35367d7d4cdf35db15da7140bbf6dc31981b2c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9991c9ab374aec8aa7780c7be35367d7d4cdf35db15da7140bbf6dc31981b2c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9991c9ab374aec8aa7780c7be35367d7d4cdf35db15da7140bbf6dc31981b2c7", kill_on_drop: false }`
[INFO] [stdout] 9991c9ab374aec8aa7780c7be35367d7d4cdf35db15da7140bbf6dc31981b2c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+6284d7b4bd27983dba388146648ab844ca7d032f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3c79ee2b6ff947d51031173e84dda1570228ac610d4102ef111dc5e3f46929e
[INFO] running `Command { std: "docker" "start" "-a" "c3c79ee2b6ff947d51031173e84dda1570228ac610d4102ef111dc5e3f46929e", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.2
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling rug v1.24.1
[INFO] [stderr]     Checking wordmash v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `mres`
[INFO] [stdout]   --> src/tests.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mres = m * m2;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_mres`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 54s
[INFO] running `Command { std: "docker" "inspect" "c3c79ee2b6ff947d51031173e84dda1570228ac610d4102ef111dc5e3f46929e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3c79ee2b6ff947d51031173e84dda1570228ac610d4102ef111dc5e3f46929e", kill_on_drop: false }`
[INFO] [stdout] c3c79ee2b6ff947d51031173e84dda1570228ac610d4102ef111dc5e3f46929e