[INFO] crate frithu 0.1.0 is already in cache
[INFO] testing frithu-0.1.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[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 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", 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" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--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-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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 835d35862bca1d9e06cf101f9293922860f1f033b22fd0241598b9ca020410e8
[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" "835d35862bca1d9e06cf101f9293922860f1f033b22fd0241598b9ca020410e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "835d35862bca1d9e06cf101f9293922860f1f033b22fd0241598b9ca020410e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "835d35862bca1d9e06cf101f9293922860f1f033b22fd0241598b9ca020410e8", kill_on_drop: false }`
[INFO] [stdout] 835d35862bca1d9e06cf101f9293922860f1f033b22fd0241598b9ca020410e8
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a223b6e4e68774230813b072e53c3d68e09214a29547b57f1457439284d65a3f
[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" "a223b6e4e68774230813b072e53c3d68e09214a29547b57f1457439284d65a3f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling frithu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.91s
[INFO] running `Command { std: "docker" "inspect" "a223b6e4e68774230813b072e53c3d68e09214a29547b57f1457439284d65a3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a223b6e4e68774230813b072e53c3d68e09214a29547b57f1457439284d65a3f", kill_on_drop: false }`
[INFO] [stdout] a223b6e4e68774230813b072e53c3d68e09214a29547b57f1457439284d65a3f
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8629e3f7eff0f23f2788a4a13a75242063d93463f979e79cca89c446d20b1dc9
[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" "8629e3f7eff0f23f2788a4a13a75242063d93463f979e79cca89c446d20b1dc9", 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 6.85s
[INFO] running `Command { std: "docker" "inspect" "8629e3f7eff0f23f2788a4a13a75242063d93463f979e79cca89c446d20b1dc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8629e3f7eff0f23f2788a4a13a75242063d93463f979e79cca89c446d20b1dc9", kill_on_drop: false }`
[INFO] [stdout] 8629e3f7eff0f23f2788a4a13a75242063d93463f979e79cca89c446d20b1dc9
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 623eec5d757542608d6e716b1b238db8182acdfdc6a88b0a3ff5ea4d553d4590
[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" "623eec5d757542608d6e716b1b238db8182acdfdc6a88b0a3ff5ea4d553d4590", 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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/frithu-838fd30e6644be2e
[INFO] [stdout] 
[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::symbol_with_empty_rule_is_nullable ... ok
[INFO] [stdout] test grammar::test::symbol_without_empty_rule_is_not_nullable ... ok
[INFO] [stdout] test grammar::test::nonterminal_symbols_must_have_rules ... ok
[INFO] [stdout] test stringcache::test::interning ... ok
[INFO] [stdout] test parser::test::ambiguous_grammar ... 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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/empty_rules-da3b598e24d0e291
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/recogniser-85b86633b2ac481c
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test reject_invalid_input ... ok
[INFO] [stdout] test reject_incomplete_input ... ok
[INFO] [stdout] test recognise_valid_input ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests frithu
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "623eec5d757542608d6e716b1b238db8182acdfdc6a88b0a3ff5ea4d553d4590", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "623eec5d757542608d6e716b1b238db8182acdfdc6a88b0a3ff5ea4d553d4590", kill_on_drop: false }`
[INFO] [stdout] 623eec5d757542608d6e716b1b238db8182acdfdc6a88b0a3ff5ea4d553d4590