[INFO] cloning repository https://github.com/MaksymPetyak/rust-coding-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MaksymPetyak/rust-coding-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaksymPetyak%2Frust-coding-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaksymPetyak%2Frust-coding-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e499a3156e8d36015adc5702e4185a13a22e6a69
[INFO] checking MaksymPetyak/rust-coding-challenge against master#368e2fd458a22d0cc133d0c254f2612ee999744f for pr-128351
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaksymPetyak%2Frust-coding-challenge" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MaksymPetyak/rust-coding-challenge on toolchain 368e2fd458a22d0cc133d0c254f2612ee999744f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MaksymPetyak/rust-coding-challenge
[INFO] finished tweaking git repo https://github.com/MaksymPetyak/rust-coding-challenge
[INFO] tweaked toml for git repo https://github.com/MaksymPetyak/rust-coding-challenge written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MaksymPetyak/rust-coding-challenge 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" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking MaksymPetyak/rust-coding-challenge against try#09146510cdb33d15474a35fde290187a88b1cf35 for pr-128351
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaksymPetyak%2Frust-coding-challenge" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MaksymPetyak/rust-coding-challenge on toolchain 09146510cdb33d15474a35fde290187a88b1cf35
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MaksymPetyak/rust-coding-challenge
[INFO] finished tweaking git repo https://github.com/MaksymPetyak/rust-coding-challenge
[INFO] tweaked toml for git repo https://github.com/MaksymPetyak/rust-coding-challenge written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/MaksymPetyak/rust-coding-challenge 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" "+09146510cdb33d15474a35fde290187a88b1cf35" "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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6d2e70930996ca47153098905dc027483ca30aa59d4000a1f430404431fa4bd
[INFO] running `Command { std: "docker" "start" "-a" "b6d2e70930996ca47153098905dc027483ca30aa59d4000a1f430404431fa4bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6d2e70930996ca47153098905dc027483ca30aa59d4000a1f430404431fa4bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6d2e70930996ca47153098905dc027483ca30aa59d4000a1f430404431fa4bd", kill_on_drop: false }`
[INFO] [stdout] b6d2e70930996ca47153098905dc027483ca30aa59d4000a1f430404431fa4bd
[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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ecbd14c9dfec5d833773a7076eba2e3338a443a6c0fdfc615c0ae7f867b332e8
[INFO] running `Command { std: "docker" "start" "-a" "ecbd14c9dfec5d833773a7076eba2e3338a443a6c0fdfc615c0ae7f867b332e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking rust-coding-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.56s
[INFO] running `Command { std: "docker" "inspect" "ecbd14c9dfec5d833773a7076eba2e3338a443a6c0fdfc615c0ae7f867b332e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecbd14c9dfec5d833773a7076eba2e3338a443a6c0fdfc615c0ae7f867b332e8", kill_on_drop: false }`
[INFO] [stdout] ecbd14c9dfec5d833773a7076eba2e3338a443a6c0fdfc615c0ae7f867b332e8