[INFO] fetching crate learn-alg 0.1.1...
[INFO] testing learn-alg-0.1.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate learn-alg 0.1.1 into /workspace/builds/worker-118/source
[INFO] validating manifest of crates.io crate learn-alg 0.1.1 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 learn-alg 0.1.1
[INFO] finished tweaking crates.io crate learn-alg 0.1.1
[INFO] tweaked toml for crates.io crate learn-alg 0.1.1 written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] crate crates.io crate learn-alg 0.1.1 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] [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-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] 8c561a3581ba2663e224f8bd8211cc470d75586fb9ebc14f8eb3a6df9af3b936
[INFO] running `Command { std: "docker" "start" "-a" "8c561a3581ba2663e224f8bd8211cc470d75586fb9ebc14f8eb3a6df9af3b936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c561a3581ba2663e224f8bd8211cc470d75586fb9ebc14f8eb3a6df9af3b936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c561a3581ba2663e224f8bd8211cc470d75586fb9ebc14f8eb3a6df9af3b936", kill_on_drop: false }`
[INFO] [stdout] 8c561a3581ba2663e224f8bd8211cc470d75586fb9ebc14f8eb3a6df9af3b936
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] 5b9cba572595cd1cea2336e1f7472951c30def9c69c068a5abcb54e7adefaa8f
[INFO] running `Command { std: "docker" "start" "-a" "5b9cba572595cd1cea2336e1f7472951c30def9c69c068a5abcb54e7adefaa8f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling learn-alg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> src/bin/lru.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 7.07s
[INFO] running `Command { std: "docker" "inspect" "5b9cba572595cd1cea2336e1f7472951c30def9c69c068a5abcb54e7adefaa8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b9cba572595cd1cea2336e1f7472951c30def9c69c068a5abcb54e7adefaa8f", kill_on_drop: false }`
[INFO] [stdout] 5b9cba572595cd1cea2336e1f7472951c30def9c69c068a5abcb54e7adefaa8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] 5b9adb3032a6c32e94dfda043fcfc585e3fe593d64b645641999fcb1f85b6e5a
[INFO] running `Command { std: "docker" "start" "-a" "5b9adb3032a6c32e94dfda043fcfc585e3fe593d64b645641999fcb1f85b6e5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn-alg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Ref`
[INFO] [stdout]  --> src/bin/lru.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::cell::{Ref, RefCell};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 0.94s
[INFO] running `Command { std: "docker" "inspect" "5b9adb3032a6c32e94dfda043fcfc585e3fe593d64b645641999fcb1f85b6e5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b9adb3032a6c32e94dfda043fcfc585e3fe593d64b645641999fcb1f85b6e5a", kill_on_drop: false }`
[INFO] [stdout] 5b9adb3032a6c32e94dfda043fcfc585e3fe593d64b645641999fcb1f85b6e5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] 588939431bb503823927bbd0bb54e835fb8c955c8e2d2aac0bf567dfad446558
[INFO] running `Command { std: "docker" "start" "-a" "588939431bb503823927bbd0bb54e835fb8c955c8e2d2aac0bf567dfad446558", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Ref`
[INFO] [stderr]  --> src/bin/lru.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::cell::{Ref, RefCell};
[INFO] [stderr]   |                 ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `learn-alg` (bin "lru" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn_alg-56cc746220df9a4b)
[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/lru-ebe6e7681c789a8f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/palindrome-e01a4912f0830717)
[INFO] [stdout] test tests::test_lru ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::test_回文偶数 ... ok
[INFO] [stdout] test tests::test_回文奇数 ... ok
[INFO] [stdout] test tests::test_回文字符串 ... ok
[INFO] [stdout] test tests::test_回文零 ... ok
[INFO] [stdout] test tests::test_回文非 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 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/str_convert-2813b999f53906df)
[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" "588939431bb503823927bbd0bb54e835fb8c955c8e2d2aac0bf567dfad446558", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "588939431bb503823927bbd0bb54e835fb8c955c8e2d2aac0bf567dfad446558", kill_on_drop: false }`
[INFO] [stdout] 588939431bb503823927bbd0bb54e835fb8c955c8e2d2aac0bf567dfad446558