[INFO] cloning repository https://github.com/charles-tangqu/lesson4demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/charles-tangqu/lesson4demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcharles-tangqu%2Flesson4demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcharles-tangqu%2Flesson4demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b5164cccf6034e952f38eb49b70b993656a1034
[INFO] testing charles-tangqu/lesson4demo against try#1b74e096b9bfb06f84a3007193dcd2f059cbdf6a for pr-96025
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcharles-tangqu%2Flesson4demo" "/workspace/builds/worker-47/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-47/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/charles-tangqu/lesson4demo on toolchain 1b74e096b9bfb06f84a3007193dcd2f059cbdf6a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/charles-tangqu/lesson4demo
[INFO] finished tweaking git repo https://github.com/charles-tangqu/lesson4demo
[INFO] tweaked toml for git repo https://github.com/charles-tangqu/lesson4demo written to /workspace/builds/worker-47/source/Cargo.toml
[INFO] crate git repo https://github.com/charles-tangqu/lesson4demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 522bba705890dd73448093358bc31028b9e634354e851bd02858eef888eb5a64
[INFO] running `Command { std: "docker" "start" "-a" "522bba705890dd73448093358bc31028b9e634354e851bd02858eef888eb5a64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "522bba705890dd73448093358bc31028b9e634354e851bd02858eef888eb5a64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "522bba705890dd73448093358bc31028b9e634354e851bd02858eef888eb5a64", kill_on_drop: false }`
[INFO] [stdout] 522bba705890dd73448093358bc31028b9e634354e851bd02858eef888eb5a64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd17294e1fa3be0a782fb22172ec6be8aa6e566606731de2c84f5d76474cd380
[INFO] running `Command { std: "docker" "start" "-a" "dd17294e1fa3be0a782fb22172ec6be8aa6e566606731de2c84f5d76474cd380", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lesson4demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.96s
[INFO] running `Command { std: "docker" "inspect" "dd17294e1fa3be0a782fb22172ec6be8aa6e566606731de2c84f5d76474cd380", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd17294e1fa3be0a782fb22172ec6be8aa6e566606731de2c84f5d76474cd380", kill_on_drop: false }`
[INFO] [stdout] dd17294e1fa3be0a782fb22172ec6be8aa6e566606731de2c84f5d76474cd380
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc9643e3ba9b17a95cd6410d90f9ad09b5585c6b5c1881a0c00294150e69d6c3
[INFO] running `Command { std: "docker" "start" "-a" "fc9643e3ba9b17a95cd6410d90f9ad09b5585c6b5c1881a0c00294150e69d6c3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lesson4demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3m 21s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/lesson4demo-267e4fc77fd4acae)
[INFO] running `Command { std: "docker" "inspect" "fc9643e3ba9b17a95cd6410d90f9ad09b5585c6b5c1881a0c00294150e69d6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc9643e3ba9b17a95cd6410d90f9ad09b5585c6b5c1881a0c00294150e69d6c3", kill_on_drop: false }`
[INFO] [stdout] fc9643e3ba9b17a95cd6410d90f9ad09b5585c6b5c1881a0c00294150e69d6c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1b74e096b9bfb06f84a3007193dcd2f059cbdf6a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6322687f2c06e120f570b12f8c13596a55cda5e9c3a6e0bcb25562322ca1ed8e
[INFO] running `Command { std: "docker" "start" "-a" "6322687f2c06e120f570b12f8c13596a55cda5e9c3a6e0bcb25562322ca1ed8e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "6322687f2c06e120f570b12f8c13596a55cda5e9c3a6e0bcb25562322ca1ed8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6322687f2c06e120f570b12f8c13596a55cda5e9c3a6e0bcb25562322ca1ed8e", kill_on_drop: false }`
[INFO] [stdout] 6322687f2c06e120f570b12f8c13596a55cda5e9c3a6e0bcb25562322ca1ed8e