[INFO] cloning repository https://github.com/frost-head/r_grep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/frost-head/r_grep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrost-head%2Fr_grep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrost-head%2Fr_grep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cf5bee469b477c3f88fc63c553467a14fc815d3b
[INFO] checking frost-head/r_grep against try#88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c for pr-154887
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrost-head%2Fr_grep" "/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/frost-head/r_grep
[INFO] finished tweaking git repo https://github.com/frost-head/r_grep
[INFO] tweaked toml for git repo https://github.com/frost-head/r_grep written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/frost-head/r_grep on toolchain 88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/frost-head/r_grep 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" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2425529a733c1e9af24384b274b3427eb6d1d3e38059b236cca7a8d2c7d86058
[INFO] running `Command { std: "docker" "start" "-a" "2425529a733c1e9af24384b274b3427eb6d1d3e38059b236cca7a8d2c7d86058", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2425529a733c1e9af24384b274b3427eb6d1d3e38059b236cca7a8d2c7d86058", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2425529a733c1e9af24384b274b3427eb6d1d3e38059b236cca7a8d2c7d86058", kill_on_drop: false }`
[INFO] [stdout] 2425529a733c1e9af24384b274b3427eb6d1d3e38059b236cca7a8d2c7d86058
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95966f9a948c5aec2c9b11e6a8ceff7eeb92279206268874c1e5b31a3210432c
[INFO] running `Command { std: "docker" "start" "-a" "95966f9a948c5aec2c9b11e6a8ceff7eeb92279206268874c1e5b31a3210432c", kill_on_drop: false }`
[INFO] [stderr]     Checking r_grep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "95966f9a948c5aec2c9b11e6a8ceff7eeb92279206268874c1e5b31a3210432c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95966f9a948c5aec2c9b11e6a8ceff7eeb92279206268874c1e5b31a3210432c", kill_on_drop: false }`
[INFO] [stdout] 95966f9a948c5aec2c9b11e6a8ceff7eeb92279206268874c1e5b31a3210432c