[INFO] cloning repository https://github.com/rust-learn/trait
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-learn/trait" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-learn%2Ftrait", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-learn%2Ftrait'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6291735a1d4a33535400b2920b115f7d2bb73e6f
[INFO] testing rust-learn/trait against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-learn%2Ftrait" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-learn/trait 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 git repo https://github.com/rust-learn/trait
[INFO] finished tweaking git repo https://github.com/rust-learn/trait
[INFO] tweaked toml for git repo https://github.com/rust-learn/trait written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-learn/trait already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] ddf411d86f850bd1711c2464a7de66513f9f1c50cd281d003351c0fd8113e62f
[INFO] running `Command { std: "docker" "start" "-a" "ddf411d86f850bd1711c2464a7de66513f9f1c50cd281d003351c0fd8113e62f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddf411d86f850bd1711c2464a7de66513f9f1c50cd281d003351c0fd8113e62f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddf411d86f850bd1711c2464a7de66513f9f1c50cd281d003351c0fd8113e62f", kill_on_drop: false }`
[INFO] [stdout] ddf411d86f850bd1711c2464a7de66513f9f1c50cd281d003351c0fd8113e62f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] dba2de23bd108376e6ad320774631337a724387557d3d73154ebc018fdac82d3
[INFO] running `Command { std: "docker" "start" "-a" "dba2de23bd108376e6ad320774631337a724387557d3d73154ebc018fdac82d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling traits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `return_summarizable`
[INFO] [stdout]   --> src/lib.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn return_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 0.67s
[INFO] running `Command { std: "docker" "inspect" "dba2de23bd108376e6ad320774631337a724387557d3d73154ebc018fdac82d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dba2de23bd108376e6ad320774631337a724387557d3d73154ebc018fdac82d3", kill_on_drop: false }`
[INFO] [stdout] dba2de23bd108376e6ad320774631337a724387557d3d73154ebc018fdac82d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 2a20c61f6173c9f02180f62c8ed94c031a3af9c18a247a3eb55afbfa32d256ca
[INFO] running `Command { std: "docker" "start" "-a" "2a20c61f6173c9f02180f62c8ed94c031a3af9c18a247a3eb55afbfa32d256ca", kill_on_drop: false }`
[INFO] [stdout] warning: function is never used: `return_summarizable`
[INFO] [stdout]   --> src/lib.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn return_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling traits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `return_summarizable`
[INFO] [stdout]   --> src/lib.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn return_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 0.28s
[INFO] running `Command { std: "docker" "inspect" "2a20c61f6173c9f02180f62c8ed94c031a3af9c18a247a3eb55afbfa32d256ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a20c61f6173c9f02180f62c8ed94c031a3af9c18a247a3eb55afbfa32d256ca", kill_on_drop: false }`
[INFO] [stdout] 2a20c61f6173c9f02180f62c8ed94c031a3af9c18a247a3eb55afbfa32d256ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] e03f7ea75b1ec4f728007bce02245e7b162bf56cd661d8c52f7152becd9f46c1
[INFO] running `Command { std: "docker" "start" "-a" "e03f7ea75b1ec4f728007bce02245e7b162bf56cd661d8c52f7152becd9f46c1", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `return_summarizable`
[INFO] [stderr]   --> src/lib.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn return_summarizable() -> impl Summary {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `traits` (lib) generated 1 warning
[INFO] [stderr] warning: `traits` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/traits-a597663bb88a85f8)
[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]    Doc-tests traits
[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" "e03f7ea75b1ec4f728007bce02245e7b162bf56cd661d8c52f7152becd9f46c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e03f7ea75b1ec4f728007bce02245e7b162bf56cd661d8c52f7152becd9f46c1", kill_on_drop: false }`
[INFO] [stdout] e03f7ea75b1ec4f728007bce02245e7b162bf56cd661d8c52f7152becd9f46c1