[INFO] cloning repository https://github.com/marceljay/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marceljay/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarceljay%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarceljay%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 41bbafc861465da0609c55a3ab1ba5cec3e2f14e
[INFO] testing marceljay/rust_playground against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarceljay%2Frust_playground" "/workspace/builds/worker-33/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-33/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/marceljay/rust_playground on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/marceljay/rust_playground
[INFO] finished tweaking git repo https://github.com/marceljay/rust_playground
[INFO] tweaked toml for git repo https://github.com/marceljay/rust_playground written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate git repo https://github.com/marceljay/rust_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c830b3916b40fa041ac6d0ee2888dcf11a22d9e18f4faa6639452653414a593
[INFO] running `Command { std: "docker" "start" "-a" "1c830b3916b40fa041ac6d0ee2888dcf11a22d9e18f4faa6639452653414a593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c830b3916b40fa041ac6d0ee2888dcf11a22d9e18f4faa6639452653414a593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c830b3916b40fa041ac6d0ee2888dcf11a22d9e18f4faa6639452653414a593", kill_on_drop: false }`
[INFO] [stdout] 1c830b3916b40fa041ac6d0ee2888dcf11a22d9e18f4faa6639452653414a593
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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=warn" "-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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 430d919a0279bcbbfec3bf1abd2d9b8da7b0736ca6a05edd77bdb79daa0a2b38
[INFO] running `Command { std: "docker" "start" "-a" "430d919a0279bcbbfec3bf1abd2d9b8da7b0736ca6a05edd77bdb79daa0a2b38", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling hello_macro v0.1.0 (/opt/rustwide/workdir/hello_macro)
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling hello_macro_derive v0.1.0 (/opt/rustwide/workdir/hello_macro/hello_macro_derive)
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io; // not in the prelude
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.12s
[INFO] running `Command { std: "docker" "inspect" "430d919a0279bcbbfec3bf1abd2d9b8da7b0736ca6a05edd77bdb79daa0a2b38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "430d919a0279bcbbfec3bf1abd2d9b8da7b0736ca6a05edd77bdb79daa0a2b38", kill_on_drop: false }`
[INFO] [stdout] 430d919a0279bcbbfec3bf1abd2d9b8da7b0736ca6a05edd77bdb79daa0a2b38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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=warn" "-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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2195872ba7e6c1b06e1c883e78a2e668c271e0c70dd73b4955b3ac0aaeb3d24
[INFO] running `Command { std: "docker" "start" "-a" "c2195872ba7e6c1b06e1c883e78a2e668c271e0c70dd73b4955b3ac0aaeb3d24", 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" "c2195872ba7e6c1b06e1c883e78a2e668c271e0c70dd73b4955b3ac0aaeb3d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2195872ba7e6c1b06e1c883e78a2e668c271e0c70dd73b4955b3ac0aaeb3d24", kill_on_drop: false }`
[INFO] [stdout] c2195872ba7e6c1b06e1c883e78a2e668c271e0c70dd73b4955b3ac0aaeb3d24