[INFO] fetching crate frithu 0.1.0...
[INFO] testing frithu-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate frithu 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate frithu 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate frithu 0.1.0
[INFO] finished tweaking crates.io crate frithu 0.1.0
[INFO] tweaked toml for crates.io crate frithu 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eadfd183ca38cdbc5b139b937a641941a5dcfe3601bfeba269bd104ac6ff5b76
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "eadfd183ca38cdbc5b139b937a641941a5dcfe3601bfeba269bd104ac6ff5b76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eadfd183ca38cdbc5b139b937a641941a5dcfe3601bfeba269bd104ac6ff5b76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eadfd183ca38cdbc5b139b937a641941a5dcfe3601bfeba269bd104ac6ff5b76", kill_on_drop: false }`
[INFO] [stdout] eadfd183ca38cdbc5b139b937a641941a5dcfe3601bfeba269bd104ac6ff5b76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.60.0" "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] c6455a9a430f382df80965354061398219dd41c73fa3e724999347bd604f00d3
[INFO] running `Command { std: "docker" "start" "-a" "c6455a9a430f382df80965354061398219dd41c73fa3e724999347bd604f00d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling frithu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.54s
[INFO] running `Command { std: "docker" "inspect" "c6455a9a430f382df80965354061398219dd41c73fa3e724999347bd604f00d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6455a9a430f382df80965354061398219dd41c73fa3e724999347bd604f00d3", kill_on_drop: false }`
[INFO] [stdout] c6455a9a430f382df80965354061398219dd41c73fa3e724999347bd604f00d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.60.0" "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] 3e4cd6bb9c17ac75708d18bb0fdc2116e52badddaa4a11f440dbc35a3fb2da32
[INFO] running `Command { std: "docker" "start" "-a" "3e4cd6bb9c17ac75708d18bb0fdc2116e52badddaa4a11f440dbc35a3fb2da32", kill_on_drop: false }`
[INFO] [stderr]    Compiling frithu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/parser.rs:404:44
[INFO] [stdout]     |
[INFO] [stdout] 404 |         let mut trees = Default::default();;
[INFO] [stdout]     |                                            ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` 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 5.36s
[INFO] running `Command { std: "docker" "inspect" "3e4cd6bb9c17ac75708d18bb0fdc2116e52badddaa4a11f440dbc35a3fb2da32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e4cd6bb9c17ac75708d18bb0fdc2116e52badddaa4a11f440dbc35a3fb2da32", kill_on_drop: false }`
[INFO] [stdout] 3e4cd6bb9c17ac75708d18bb0fdc2116e52badddaa4a11f440dbc35a3fb2da32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.60.0" "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] f0b53737615cb33554da107d8ca6a9e638b51b30a40c4b71c48975cf16ee5f7e
[INFO] running `Command { std: "docker" "start" "-a" "f0b53737615cb33554da107d8ca6a9e638b51b30a40c4b71c48975cf16ee5f7e", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/parser.rs:404:44
[INFO] [stderr]     |
[INFO] [stderr] 404 |         let mut trees = Default::default();;
[INFO] [stderr]     |                                            ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `frithu` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/frithu-77b58d85b237d7c8)
[INFO] [stdout] running 10 tests
[INFO] [stdout] test grammar::test::get_info_for_unknown_symbol_returns_none ... ok
[INFO] [stdout] test grammar::test::grammar_needs_start_symbol_defined ... ok
[INFO] [stdout] test grammar::test::nonterminal_symbols_must_have_rules ... ok
[INFO] [stdout] test grammar::test::symbol_without_empty_rule_is_not_nullable ... ok
[INFO] [stdout] test parser::test::ambiguous_grammar ... ok
[INFO] [stdout] test grammar::test::symbol_with_empty_rule_is_nullable ... ok
[INFO] [stdout] test stringcache::test::interning ... ok
[INFO] [stdout] test grammar::test::symbol_nullable_iff_all_nullable_rule ... ok
[INFO] [stdout] test parser::test::infinitely_ambiguous_grammar ... ok
[INFO] [stdout] test parser::test::right_recursion_in_linear_space ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/empty_rules.rs (/opt/rustwide/target/debug/deps/empty_rules-f59258262314040a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/recogniser.rs (/opt/rustwide/target/debug/deps/recogniser-18fdfcabe79fe1bd)
[INFO] [stdout] test complex_empty_string_recogniser ... 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 3 tests
[INFO] [stdout] test recognise_valid_input ... ok
[INFO] [stderr]    Doc-tests frithu
[INFO] [stdout] test reject_invalid_input ... ok
[INFO] [stdout] test reject_incomplete_input ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[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" "f0b53737615cb33554da107d8ca6a9e638b51b30a40c4b71c48975cf16ee5f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0b53737615cb33554da107d8ca6a9e638b51b30a40c4b71c48975cf16ee5f7e", kill_on_drop: false }`
[INFO] [stdout] f0b53737615cb33554da107d8ca6a9e638b51b30a40c4b71c48975cf16ee5f7e