[INFO] fetching crate koval 0.5.1...
[INFO] testing koval-0.5.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate koval 0.5.1 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate koval 0.5.1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate koval 0.5.1
[INFO] finished tweaking crates.io crate koval 0.5.1
[INFO] tweaked toml for crates.io crate koval 0.5.1 written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b74662fd900a2e91b480a7a769b827c56c3506162334987539622a14b94baf5
[INFO] running `Command { std: "docker" "start" "-a" "8b74662fd900a2e91b480a7a769b827c56c3506162334987539622a14b94baf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b74662fd900a2e91b480a7a769b827c56c3506162334987539622a14b94baf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b74662fd900a2e91b480a7a769b827c56c3506162334987539622a14b94baf5", kill_on_drop: false }`
[INFO] [stdout] 8b74662fd900a2e91b480a7a769b827c56c3506162334987539622a14b94baf5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffda14762ca26603a99774a9768661235174589d70222279029b5f49d8b70258
[INFO] running `Command { std: "docker" "start" "-a" "ffda14762ca26603a99774a9768661235174589d70222279029b5f49d8b70258", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling koval v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.40s
[INFO] running `Command { std: "docker" "inspect" "ffda14762ca26603a99774a9768661235174589d70222279029b5f49d8b70258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffda14762ca26603a99774a9768661235174589d70222279029b5f49d8b70258", kill_on_drop: false }`
[INFO] [stdout] ffda14762ca26603a99774a9768661235174589d70222279029b5f49d8b70258
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d0eb8e38fed663571dbf9ada553fa2fd89e86a47e7c1f8d2b97dc8b2b0151d5
[INFO] running `Command { std: "docker" "start" "-a" "0d0eb8e38fed663571dbf9ada553fa2fd89e86a47e7c1f8d2b97dc8b2b0151d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling koval v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/test.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let mut container = Container::new()
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` 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 1.15s
[INFO] running `Command { std: "docker" "inspect" "0d0eb8e38fed663571dbf9ada553fa2fd89e86a47e7c1f8d2b97dc8b2b0151d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d0eb8e38fed663571dbf9ada553fa2fd89e86a47e7c1f8d2b97dc8b2b0151d5", kill_on_drop: false }`
[INFO] [stdout] 0d0eb8e38fed663571dbf9ada553fa2fd89e86a47e7c1f8d2b97dc8b2b0151d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6f338d313d3798f799a9c21d4ebee7e34d49bad984a83b5363e60a0e90e356cf
[INFO] running `Command { std: "docker" "start" "-a" "6f338d313d3798f799a9c21d4ebee7e34d49bad984a83b5363e60a0e90e356cf", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/test.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |         let mut container = Container::new()
[INFO] [stderr]    |             ----^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `koval` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/koval-c4dfba34a376798d)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test::tests::it_works_built ... ok
[INFO] [stdout] test test::tests::it_works_built_w_child ... ok
[INFO] [stdout] test test::tests::readme_test ... ok
[INFO] [stdout] test test::tests::it_works_unbuilt ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests koval
[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" "6f338d313d3798f799a9c21d4ebee7e34d49bad984a83b5363e60a0e90e356cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f338d313d3798f799a9c21d4ebee7e34d49bad984a83b5363e60a0e90e356cf", kill_on_drop: false }`
[INFO] [stdout] 6f338d313d3798f799a9c21d4ebee7e34d49bad984a83b5363e60a0e90e356cf