[INFO] fetching crate lox-scanner 0.1.0...
[INFO] testing lox-scanner-0.1.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate lox-scanner 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate lox-scanner 0.1.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lox-scanner 0.1.0
[INFO] finished tweaking crates.io crate lox-scanner 0.1.0
[INFO] tweaked toml for crates.io crate lox-scanner 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate lox-scanner 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d98bbdf229e5cdd5aa7dfb3e898923d9c8a8267ac9f4cbf8fc155071006e246a
[INFO] running `Command { std: "docker" "start" "-a" "d98bbdf229e5cdd5aa7dfb3e898923d9c8a8267ac9f4cbf8fc155071006e246a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d98bbdf229e5cdd5aa7dfb3e898923d9c8a8267ac9f4cbf8fc155071006e246a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d98bbdf229e5cdd5aa7dfb3e898923d9c8a8267ac9f4cbf8fc155071006e246a", kill_on_drop: false }`
[INFO] [stdout] d98bbdf229e5cdd5aa7dfb3e898923d9c8a8267ac9f4cbf8fc155071006e246a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f84d2dae81a76c91bcf8bd67f49911d69d09959971ac1e5519dc5936bb1834c4
[INFO] running `Command { std: "docker" "start" "-a" "f84d2dae81a76c91bcf8bd67f49911d69d09959971ac1e5519dc5936bb1834c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling peekmore v1.0.0
[INFO] [stderr]    Compiling lox-scanner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `peek_ahead`
[INFO] [stdout]   --> src/source_iterator.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub(crate) fn peek_ahead(&mut self) -> Option<&char> {
[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 2.20s
[INFO] running `Command { std: "docker" "inspect" "f84d2dae81a76c91bcf8bd67f49911d69d09959971ac1e5519dc5936bb1834c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f84d2dae81a76c91bcf8bd67f49911d69d09959971ac1e5519dc5936bb1834c4", kill_on_drop: false }`
[INFO] [stdout] f84d2dae81a76c91bcf8bd67f49911d69d09959971ac1e5519dc5936bb1834c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 525e7305f702f424afab081bac79f9af7f5953927337ca562e68fcfd2fe0fbb0
[INFO] running `Command { std: "docker" "start" "-a" "525e7305f702f424afab081bac79f9af7f5953927337ca562e68fcfd2fe0fbb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling lox-scanner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `peek_ahead`
[INFO] [stdout]   --> src/source_iterator.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub(crate) fn peek_ahead(&mut self) -> Option<&char> {
[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] [stdout] warning: associated function is never used: `peek_ahead`
[INFO] [stdout]   --> src/source_iterator.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub(crate) fn peek_ahead(&mut self) -> Option<&char> {
[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 1.49s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/lox_scanner-3f0ffc0390703c27)
[INFO] [stderr]   Executable unittests src/bin/sample.rs (/opt/rustwide/target/debug/deps/sample-4184b3aad5d53300)
[INFO] running `Command { std: "docker" "inspect" "525e7305f702f424afab081bac79f9af7f5953927337ca562e68fcfd2fe0fbb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "525e7305f702f424afab081bac79f9af7f5953927337ca562e68fcfd2fe0fbb0", kill_on_drop: false }`
[INFO] [stdout] 525e7305f702f424afab081bac79f9af7f5953927337ca562e68fcfd2fe0fbb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 77c0feaf26e124c75252ff8c7eae12fea3576ab396cdcf769ed56a6f4838ffb7
[INFO] running `Command { std: "docker" "start" "-a" "77c0feaf26e124c75252ff8c7eae12fea3576ab396cdcf769ed56a6f4838ffb7", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `peek_ahead`
[INFO] [stderr]   --> src/source_iterator.rs:38:19
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub(crate) fn peek_ahead(&mut self) -> Option<&char> {
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `lox-scanner` (lib) generated 1 warning
[INFO] [stderr] warning: `lox-scanner` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lox_scanner-3f0ffc0390703c27)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test tests::test_empty_source ... ok
[INFO] [stdout] test tests::test_list_single_char_tokens ... ok
[INFO] [stdout] test tests::test_single_char ... ok
[INFO] [stdout] test tests::test_string ... ok
[INFO] [stdout] test tests::test_unterminated_string ... ok
[INFO] [stdout] test source_iterator::tests::test_empty ... ok
[INFO] [stderr]      Running unittests src/bin/sample.rs (/opt/rustwide/target/debug/deps/sample-4184b3aad5d53300)
[INFO] [stdout] test source_iterator::tests::test_two_chars ... ok
[INFO] [stderr]    Doc-tests lox-scanner
[INFO] [stdout] test source_iterator::tests::test_single_char ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[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] [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" "77c0feaf26e124c75252ff8c7eae12fea3576ab396cdcf769ed56a6f4838ffb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77c0feaf26e124c75252ff8c7eae12fea3576ab396cdcf769ed56a6f4838ffb7", kill_on_drop: false }`
[INFO] [stdout] 77c0feaf26e124c75252ff8c7eae12fea3576ab396cdcf769ed56a6f4838ffb7