[INFO] fetching crate kant 0.0.3...
[INFO] testing kant-0.0.3 against 1.59.0 for beta-1.60-1
[INFO] extracting crate kant 0.0.3 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate kant 0.0.3 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 kant 0.0.3
[INFO] finished tweaking crates.io crate kant 0.0.3
[INFO] tweaked toml for crates.io crate kant 0.0.3 written to /workspace/builds/worker-20/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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 3807a035ff7c4fea6f1e5a86ea43bf91023a61d574c205bfc2dc042925158ab2
[INFO] running `Command { std: "docker" "start" "-a" "3807a035ff7c4fea6f1e5a86ea43bf91023a61d574c205bfc2dc042925158ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3807a035ff7c4fea6f1e5a86ea43bf91023a61d574c205bfc2dc042925158ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3807a035ff7c4fea6f1e5a86ea43bf91023a61d574c205bfc2dc042925158ab2", kill_on_drop: false }`
[INFO] [stdout] 3807a035ff7c4fea6f1e5a86ea43bf91023a61d574c205bfc2dc042925158ab2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] c8c8df43bc828ebb77a8f9dc83c4976a164bbfa238972c872a473d6a8afd04e5
[INFO] running `Command { std: "docker" "start" "-a" "c8c8df43bc828ebb77a8f9dc83c4976a164bbfa238972c872a473d6a8afd04e5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling kant v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:166:5
[INFO] [stdout]     |
[INFO] [stdout] 166 |     (unboosted.exp() - 1.)
[INFO] [stdout]     |     ^                    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 166 -     (unboosted.exp() - 1.)
[INFO] [stdout] 166 +     unboosted.exp() - 1.
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "c8c8df43bc828ebb77a8f9dc83c4976a164bbfa238972c872a473d6a8afd04e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8c8df43bc828ebb77a8f9dc83c4976a164bbfa238972c872a473d6a8afd04e5", kill_on_drop: false }`
[INFO] [stdout] c8c8df43bc828ebb77a8f9dc83c4976a164bbfa238972c872a473d6a8afd04e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] ac5e2ff485c6e27e3b295e7c6b5b567365dcfbc6c9da76b6fc121ecb372dccc8
[INFO] running `Command { std: "docker" "start" "-a" "ac5e2ff485c6e27e3b295e7c6b5b567365dcfbc6c9da76b6fc121ecb372dccc8", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:166:5
[INFO] [stdout]     |
[INFO] [stdout] 166 |     (unboosted.exp() - 1.)
[INFO] [stdout]     |     ^                    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 166 -     (unboosted.exp() - 1.)
[INFO] [stdout] 166 +     unboosted.exp() - 1.
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling kant v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:166:5
[INFO] [stdout]     |
[INFO] [stdout] 166 |     (unboosted.exp() - 1.)
[INFO] [stdout]     |     ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:26:24
[INFO] [stdout]     |
[INFO] [stdout] 26  | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_parens)]` implied by `#[warn(warnings)]`
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 166 -     (unboosted.exp() - 1.)
[INFO] [stdout] 166 +     unboosted.exp() - 1.
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "ac5e2ff485c6e27e3b295e7c6b5b567365dcfbc6c9da76b6fc121ecb372dccc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac5e2ff485c6e27e3b295e7c6b5b567365dcfbc6c9da76b6fc121ecb372dccc8", kill_on_drop: false }`
[INFO] [stdout] ac5e2ff485c6e27e3b295e7c6b5b567365dcfbc6c9da76b6fc121ecb372dccc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 9cabce25c54060c1f4f37b9e7cc5f3011bd157152366aa147d065343e483b0c1
[INFO] running `Command { std: "docker" "start" "-a" "9cabce25c54060c1f4f37b9e7cc5f3011bd157152366aa147d065343e483b0c1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |     (unboosted.exp() - 1.)
[INFO] [stderr]     |     ^                    ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 166 -     (unboosted.exp() - 1.)
[INFO] [stderr] 166 +     unboosted.exp() - 1.
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `kant` (lib) generated 1 warning
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/lib.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |     (unboosted.exp() - 1.)
[INFO] [stderr]     |     ^                    ^
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/lib.rs:26:24
[INFO] [stderr]     |
[INFO] [stderr] 26  | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]     |                        ^^^^^^^^
[INFO] [stderr]     = note: `#[warn(unused_parens)]` implied by `#[warn(warnings)]`
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 166 -     (unboosted.exp() - 1.)
[INFO] [stderr] 166 +     unboosted.exp() - 1.
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `kant` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/kant-a7e158d73234f88e)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test it_works ... ok
[INFO] [stdout] test high_percentiles ... ok
[INFO] [stdout] test multithreaded ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kant
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 |     (unboosted.exp() - 1.)
[INFO] [stderr]     |     ^                    ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 166 -     (unboosted.exp() - 1.)
[INFO] [stderr] 166 +     unboosted.exp() - 1.
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stdout] running 0 tests
[INFO] [stderr] 
[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" "9cabce25c54060c1f4f37b9e7cc5f3011bd157152366aa147d065343e483b0c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cabce25c54060c1f4f37b9e7cc5f3011bd157152366aa147d065343e483b0c1", kill_on_drop: false }`
[INFO] [stdout] 9cabce25c54060c1f4f37b9e7cc5f3011bd157152366aa147d065343e483b0c1