[INFO] fetching crate earlgrey 0.3.0...
[INFO] testing earlgrey-0.3.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate earlgrey 0.3.0 into /workspace/builds/worker-64/source
[INFO] validating manifest of crates.io crate earlgrey 0.3.0 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 earlgrey 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate earlgrey 0.3.0
[INFO] tweaked toml for crates.io crate earlgrey 0.3.0 written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] crate crates.io crate earlgrey 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustyline v5.0.6
[INFO] [stderr]   Downloaded unicode-width v0.1.7
[INFO] [stderr]   Downloaded utf8parse v0.1.1
[INFO] [stderr]   Downloaded getrandom v0.1.14
[INFO] [stderr]   Downloaded unicode-segmentation v1.6.0
[INFO] [stderr]   Downloaded memchr v2.3.0
[INFO] [stderr]   Downloaded cc v1.0.50
[INFO] [stderr]   Downloaded arrayref v0.3.5
[INFO] [stderr]   Downloaded blake2b_simd v0.5.10
[INFO] [stderr]   Downloaded redox_syscall v0.1.56
[INFO] [stderr]   Downloaded arrayvec v0.5.1
[INFO] [stderr]   Downloaded constant_time_eq v0.1.5
[INFO] [stderr]   Downloaded base64 v0.11.0
[INFO] [stderr]   Downloaded redox_users v0.3.3
[INFO] [stderr]   Downloaded dirs-sys v0.3.4
[INFO] [stderr]   Downloaded crossbeam-utils v0.6.6
[INFO] [stderr]   Downloaded nix v0.14.1
[INFO] [stderr]   Downloaded log v0.4.8
[INFO] [stderr]   Downloaded dirs v2.0.2
[INFO] [stderr]   Downloaded libc v0.2.66
[INFO] [stderr]   Downloaded rust-argon2 v0.6.1
[INFO] [stderr]   Downloaded lexers v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] 0e3b06a7e457c487780cf9d7e95d14bb4ff0090c975865a2e4e4192463be69d6
[INFO] running `Command { std: "docker" "start" "-a" "0e3b06a7e457c487780cf9d7e95d14bb4ff0090c975865a2e4e4192463be69d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e3b06a7e457c487780cf9d7e95d14bb4ff0090c975865a2e4e4192463be69d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e3b06a7e457c487780cf9d7e95d14bb4ff0090c975865a2e4e4192463be69d6", kill_on_drop: false }`
[INFO] [stdout] 0e3b06a7e457c487780cf9d7e95d14bb4ff0090c975865a2e4e4192463be69d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] 559dadd73f9debce9278ff34f3ae1d095ef88f453d55d14a6255ca942cfdb0be
[INFO] running `Command { std: "docker" "start" "-a" "559dadd73f9debce9278ff34f3ae1d095ef88f453d55d14a6255ca942cfdb0be", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling earlgrey v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.65s
[INFO] running `Command { std: "docker" "inspect" "559dadd73f9debce9278ff34f3ae1d095ef88f453d55d14a6255ca942cfdb0be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "559dadd73f9debce9278ff34f3ae1d095ef88f453d55d14a6255ca942cfdb0be", kill_on_drop: false }`
[INFO] [stdout] 559dadd73f9debce9278ff34f3ae1d095ef88f453d55d14a6255ca942cfdb0be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] f8028896b4bfc90a63f7d772ca6e4ac64afef569e7bef297560c2fc648cb18e5
[INFO] running `Command { std: "docker" "start" "-a" "f8028896b4bfc90a63f7d772ca6e4ac64afef569e7bef297560c2fc648cb18e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling utf8parse v0.1.1
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling lexers v0.1.2
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling rustyline v5.0.6
[INFO] [stderr]    Compiling earlgrey v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]  --> examples/arith.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::str::FromStr;;
[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 8.36s
[INFO] running `Command { std: "docker" "inspect" "f8028896b4bfc90a63f7d772ca6e4ac64afef569e7bef297560c2fc648cb18e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8028896b4bfc90a63f7d772ca6e4ac64afef569e7bef297560c2fc648cb18e5", kill_on_drop: false }`
[INFO] [stdout] f8028896b4bfc90a63f7d772ca6e4ac64afef569e7bef297560c2fc648cb18e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] 6c7523cf2f94daf7182c82c00f4cd8f38fcb28a6358e4d950c0df25d6fa1ac68
[INFO] running `Command { std: "docker" "start" "-a" "6c7523cf2f94daf7182c82c00f4cd8f38fcb28a6358e4d950c0df25d6fa1ac68", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]  --> examples/arith.rs:4:27
[INFO] [stderr]   |
[INFO] [stderr] 4 |     use std::str::FromStr;;
[INFO] [stderr]   |                           ^ help: remove this semicolon
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `earlgrey` (example "arith") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/earlgrey-d1db5996055fa897)
[INFO] [stdout] 
[INFO] [stdout] running 31 tests
[INFO] [stdout] test grammar::tests::dup_rule ... ok
[INFO] [stdout] test grammar::tests::build_grammar ... ok
[INFO] [stdout] test grammar::tests::dup_symbol ... ok
[INFO] [stdout] test grammar::tests::symbol_eq ... ok
[INFO] [stdout] test grammar::tests::missing_symbol ... ok
[INFO] [stdout] test grammar::tests::symbol_extract ... ok
[INFO] [stdout] test grammar::tests::symbol_terminal ... ok
[INFO] [stdout] test items::tests::item_complete ... ok
[INFO] [stdout] test items::tests::item_basics ... ok
[INFO] [stdout] test items::tests::item_merge_sources ... ok
[INFO] [stdout] test items::tests::item_predict ... ok
[INFO] [stdout] test items::tests::item_scan ... ok
[INFO] [stdout] test parser_test::earley_corner_case ... ok
[INFO] [stdout] test parser_test::earley_recognizer::left_recurse ... ok
[INFO] [stdout] test parser_test::earley_recognizer::bogus_empty ... ok
[INFO] [stdout] test parser_test::earley_recognizer::epsilon_variants ... ok
[INFO] [stdout] test parser_test::earley_recognizer::partial_parse ... ok
[INFO] [stdout] test parser_test::right_recurse ... ok
[INFO] [stdout] test parser_test::small_math::build_sexpr ... ok
[INFO] [stdout] test parser_test::grammar_ambiguous_epsilon ... ok
[INFO] [stdout] test parser_test::small_math::build_ast ... ok
[INFO] [stdout] test parser_test::left_recurse ... ok
[INFO] [stdout] test parser_test::grammar_ambiguous ... ok
[INFO] [stdout] test parser_test::earley_recognizer::right_recurse ... ok
[INFO] [stdout] test parser_test::small_math::eval_actions ... ok
[INFO] [stdout] test parser_test::earley_recognizer::natural_lang ... ok
[INFO] [stdout] test parser_test::earley_recognizer::epsilon_balanced ... ok
[INFO] [stdout] test parser_test::math::math_grammar_test ... ok
[INFO] [stdout] test parser_test::math_ambiguous_catalan ... ok
[INFO] [stdout] test items::tests::item_failed_merge - should panic ... ok
[INFO] [stdout] test parser_test::earley_recognizer::grammar_example ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 31 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests earlgrey
[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" "6c7523cf2f94daf7182c82c00f4cd8f38fcb28a6358e4d950c0df25d6fa1ac68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c7523cf2f94daf7182c82c00f4cd8f38fcb28a6358e4d950c0df25d6fa1ac68", kill_on_drop: false }`
[INFO] [stdout] 6c7523cf2f94daf7182c82c00f4cd8f38fcb28a6358e4d950c0df25d6fa1ac68