[INFO] fetching crate vowels_detector 0.1.0...
[INFO] testing vowels_detector-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate vowels_detector 0.1.0 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate vowels_detector 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vowels_detector 0.1.0
[INFO] finished tweaking crates.io crate vowels_detector 0.1.0
[INFO] tweaked toml for crates.io crate vowels_detector 0.1.0 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58c19603858daef32cd980641b74e9c9620ffdf0333ea4fdc7f246b1ce51f679
[INFO] running `Command { std: "docker" "start" "-a" "58c19603858daef32cd980641b74e9c9620ffdf0333ea4fdc7f246b1ce51f679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58c19603858daef32cd980641b74e9c9620ffdf0333ea4fdc7f246b1ce51f679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58c19603858daef32cd980641b74e9c9620ffdf0333ea4fdc7f246b1ce51f679", kill_on_drop: false }`
[INFO] [stdout] 58c19603858daef32cd980641b74e9c9620ffdf0333ea4fdc7f246b1ce51f679
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e42dc2b95ab6506e30c2693432e39c3c97a85c2db0a6a7195339e422a41dcfe7
[INFO] running `Command { std: "docker" "start" "-a" "e42dc2b95ab6506e30c2693432e39c3c97a85c2db0a6a7195339e422a41dcfe7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling vowels_detector v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]  --> src/lib.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |     if(i == 'a' || i == 'e' || i == 'i' || i == 'o' || i == 'u'){
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` 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 1.48s
[INFO] running `Command { std: "docker" "inspect" "e42dc2b95ab6506e30c2693432e39c3c97a85c2db0a6a7195339e422a41dcfe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e42dc2b95ab6506e30c2693432e39c3c97a85c2db0a6a7195339e422a41dcfe7", kill_on_drop: false }`
[INFO] [stdout] e42dc2b95ab6506e30c2693432e39c3c97a85c2db0a6a7195339e422a41dcfe7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8b9a43e80aa14aa14d144d368ab098dd694929d7ff74d74ee6eee34eba13c31
[INFO] running `Command { std: "docker" "start" "-a" "f8b9a43e80aa14aa14d144d368ab098dd694929d7ff74d74ee6eee34eba13c31", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]  --> src/lib.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |     if(i == 'a' || i == 'e' || i == 'i' || i == 'o' || i == 'u'){
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling vowels_detector v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]  --> src/lib.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |     if(i == 'a' || i == 'e' || i == 'i' || i == 'o' || i == 'u'){
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` 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 1.37s
[INFO] running `Command { std: "docker" "inspect" "f8b9a43e80aa14aa14d144d368ab098dd694929d7ff74d74ee6eee34eba13c31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8b9a43e80aa14aa14d144d368ab098dd694929d7ff74d74ee6eee34eba13c31", kill_on_drop: false }`
[INFO] [stdout] f8b9a43e80aa14aa14d144d368ab098dd694929d7ff74d74ee6eee34eba13c31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d97f4353ba7fed7f4a7ba8846bec13096cb97f92559f8d25695adcef6d90cbc3
[INFO] running `Command { std: "docker" "start" "-a" "d97f4353ba7fed7f4a7ba8846bec13096cb97f92559f8d25695adcef6d90cbc3", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]  --> src/lib.rs:6:7
[INFO] [stderr]   |
[INFO] [stderr] 6 |     if(i == 'a' || i == 'e' || i == 'i' || i == 'o' || i == 'u'){
[INFO] [stderr]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `vowels_detector` (lib) generated 1 warning
[INFO] [stderr] warning: `vowels_detector` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/vowels_detector-fa3c4788a5aa6591)
[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 vowels_detector
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]  --> /opt/rustwide/workdir/src/lib.rs:6:7
[INFO] [stderr]   |
[INFO] [stderr] 6 |     if(i == 'a' || i == 'e' || i == 'i' || i == 'o' || i == 'u'){
[INFO] [stderr]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[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] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] running `Command { std: "docker" "inspect" "d97f4353ba7fed7f4a7ba8846bec13096cb97f92559f8d25695adcef6d90cbc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d97f4353ba7fed7f4a7ba8846bec13096cb97f92559f8d25695adcef6d90cbc3", kill_on_drop: false }`
[INFO] [stdout] d97f4353ba7fed7f4a7ba8846bec13096cb97f92559f8d25695adcef6d90cbc3