[INFO] cloning repository https://github.com/swissmanu/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/swissmanu/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswissmanu%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswissmanu%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9fa1a2ea024e3e839f42a1d858c807eefa2e623f
[INFO] testing swissmanu/rust-playground against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswissmanu%2Frust-playground" "/workspace/builds/worker-57/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-57/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/swissmanu/rust-playground on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/swissmanu/rust-playground
[INFO] finished tweaking git repo https://github.com/swissmanu/rust-playground
[INFO] tweaked toml for git repo https://github.com/swissmanu/rust-playground written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate git repo https://github.com/swissmanu/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e9c9adc9508d0e7a58f457aac773175d3a0e9a686706d69b052505867d0c27f
[INFO] running `Command { std: "docker" "start" "-a" "4e9c9adc9508d0e7a58f457aac773175d3a0e9a686706d69b052505867d0c27f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e9c9adc9508d0e7a58f457aac773175d3a0e9a686706d69b052505867d0c27f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e9c9adc9508d0e7a58f457aac773175d3a0e9a686706d69b052505867d0c27f", kill_on_drop: false }`
[INFO] [stdout] 4e9c9adc9508d0e7a58f457aac773175d3a0e9a686706d69b052505867d0c27f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b423d7e8aa47b9824546ff69b9ba51e5811908607de901e3295218b86acac094
[INFO] running `Command { std: "docker" "start" "-a" "b423d7e8aa47b9824546ff69b9ba51e5811908607de901e3295218b86acac094", kill_on_drop: false }`
[INFO] [stderr]    Compiling helloworld v0.0.1 (/opt/rustwide/workdir/helloworld)
[INFO] [stderr]    Compiling ownership v0.1.0 (/opt/rustwide/workdir/ownership)
[INFO] [stderr]    Compiling mutability v0.1.0 (/opt/rustwide/workdir/mutability)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> ownership/src/main.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 |   let x = "manu"; // type is &str
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.43s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b423d7e8aa47b9824546ff69b9ba51e5811908607de901e3295218b86acac094", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b423d7e8aa47b9824546ff69b9ba51e5811908607de901e3295218b86acac094", kill_on_drop: false }`
[INFO] [stdout] b423d7e8aa47b9824546ff69b9ba51e5811908607de901e3295218b86acac094
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 248271a6a6433ed88525dfbbf18c2e406b8bf7a6c985863b8cfa1e3e2ad23808
[INFO] running `Command { std: "docker" "start" "-a" "248271a6a6433ed88525dfbbf18c2e406b8bf7a6c985863b8cfa1e3e2ad23808", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mutability v0.1.0 (/opt/rustwide/workdir/mutability)
[INFO] [stderr]    Compiling ownership v0.1.0 (/opt/rustwide/workdir/ownership)
[INFO] [stderr]    Compiling helloworld v0.0.1 (/opt/rustwide/workdir/helloworld)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> ownership/src/main.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 |   let x = "manu"; // type is &str
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `Command { std: "docker" "inspect" "248271a6a6433ed88525dfbbf18c2e406b8bf7a6c985863b8cfa1e3e2ad23808", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "248271a6a6433ed88525dfbbf18c2e406b8bf7a6c985863b8cfa1e3e2ad23808", kill_on_drop: false }`
[INFO] [stdout] 248271a6a6433ed88525dfbbf18c2e406b8bf7a6c985863b8cfa1e3e2ad23808
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e73a3170270daee04b61bb98b67e19a86a194677bb9b56af3d3985df99af07c9
[INFO] running `Command { std: "docker" "start" "-a" "e73a3170270daee04b61bb98b67e19a86a194677bb9b56af3d3985df99af07c9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> ownership/src/main.rs:22:7
[INFO] [stderr]    |
[INFO] [stderr] 22 |   let x = "manu"; // type is &str
[INFO] [stderr]    |       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ownership` (bin "ownership" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 30s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/helloworld-28b2817971571831)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mutability-cc8855a84237efd0)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ownership-18d3c794f925a00b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e73a3170270daee04b61bb98b67e19a86a194677bb9b56af3d3985df99af07c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e73a3170270daee04b61bb98b67e19a86a194677bb9b56af3d3985df99af07c9", kill_on_drop: false }`
[INFO] [stdout] e73a3170270daee04b61bb98b67e19a86a194677bb9b56af3d3985df99af07c9