[INFO] cloning repository https://github.com/mloine/reust-learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mloine/reust-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmloine%2Freust-learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmloine%2Freust-learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3f452a9f34654d1d5aba34d3a56ef72c51d1ed4
[INFO] checking mloine/reust-learn against try#028201683a76a5cd349729c6819c46607119c4e8 for pr-144157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmloine%2Freust-learn" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mloine/reust-learn
[INFO] finished tweaking git repo https://github.com/mloine/reust-learn
[INFO] tweaked toml for git repo https://github.com/mloine/reust-learn written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mloine/reust-learn on toolchain 028201683a76a5cd349729c6819c46607119c4e8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mloine/reust-learn 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" "+028201683a76a5cd349729c6819c46607119c4e8" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking mloine/reust-learn against try#028201683a76a5cd349729c6819c46607119c4e8 for pr-144157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmloine%2Freust-learn" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mloine/reust-learn
[INFO] finished tweaking git repo https://github.com/mloine/reust-learn
[INFO] tweaked toml for git repo https://github.com/mloine/reust-learn written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mloine/reust-learn on toolchain 028201683a76a5cd349729c6819c46607119c4e8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mloine/reust-learn 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" "+028201683a76a5cd349729c6819c46607119c4e8" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b38f4455179950ef833d228595b2f0cd39cede3ea3a35fe50de2dae104b9e69
[INFO] running `Command { std: "docker" "start" "-a" "9b38f4455179950ef833d228595b2f0cd39cede3ea3a35fe50de2dae104b9e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b38f4455179950ef833d228595b2f0cd39cede3ea3a35fe50de2dae104b9e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b38f4455179950ef833d228595b2f0cd39cede3ea3a35fe50de2dae104b9e69", kill_on_drop: false }`
[INFO] [stdout] 9b38f4455179950ef833d228595b2f0cd39cede3ea3a35fe50de2dae104b9e69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e50697ccd0fbb74ecb2f7cca4bbe33fcecaccf507c1e4c6a51fc32398c0205f7
[INFO] running `Command { std: "docker" "start" "-a" "e50697ccd0fbb74ecb2f7cca4bbe33fcecaccf507c1e4c6a51fc32398c0205f7", kill_on_drop: false }`
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking smallvec v0.4.5
[INFO] [stderr]     Checking textwrap v0.13.4
[INFO] [stderr]     Checking ferris-says v0.2.1
[INFO] [stderr]     Checking hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "e50697ccd0fbb74ecb2f7cca4bbe33fcecaccf507c1e4c6a51fc32398c0205f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e50697ccd0fbb74ecb2f7cca4bbe33fcecaccf507c1e4c6a51fc32398c0205f7", kill_on_drop: false }`
[INFO] [stdout] e50697ccd0fbb74ecb2f7cca4bbe33fcecaccf507c1e4c6a51fc32398c0205f7