[INFO] fetching crate rex-regex 0.1.4...
[INFO] testing rex-regex-0.1.4 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate rex-regex 0.1.4 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate rex-regex 0.1.4 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rex-regex 0.1.4
[INFO] finished tweaking crates.io crate rex-regex 0.1.4
[INFO] tweaked toml for crates.io crate rex-regex 0.1.4 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "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] 48b3acbf873702fabfcfbe3fca8535fa28131bef56a9259c9cdd1f2c781052da
[INFO] running `Command { std: "docker" "start" "-a" "48b3acbf873702fabfcfbe3fca8535fa28131bef56a9259c9cdd1f2c781052da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48b3acbf873702fabfcfbe3fca8535fa28131bef56a9259c9cdd1f2c781052da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48b3acbf873702fabfcfbe3fca8535fa28131bef56a9259c9cdd1f2c781052da", kill_on_drop: false }`
[INFO] [stdout] 48b3acbf873702fabfcfbe3fca8535fa28131bef56a9259c9cdd1f2c781052da
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 420b4fc4e02c32946211984d2040b92d072cf2d474ac5c1fc37d630f92c4f260
[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" "420b4fc4e02c32946211984d2040b92d072cf2d474ac5c1fc37d630f92c4f260", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rex-regex v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/matching.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashSet, HashMap};
[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 3.73s
[INFO] running `Command { std: "docker" "inspect" "420b4fc4e02c32946211984d2040b92d072cf2d474ac5c1fc37d630f92c4f260", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "420b4fc4e02c32946211984d2040b92d072cf2d474ac5c1fc37d630f92c4f260", kill_on_drop: false }`
[INFO] [stdout] 420b4fc4e02c32946211984d2040b92d072cf2d474ac5c1fc37d630f92c4f260
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17bcda1f73391c5ecb3a2b51c10b15cf358ed956b2b5c96ee29465ebe9ad31ae
[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" "17bcda1f73391c5ecb3a2b51c10b15cf358ed956b2b5c96ee29465ebe9ad31ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling bencher v0.1.5
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/matching.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashSet, HashMap};
[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]    Compiling rex-regex v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/matching.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashSet, HashMap};
[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 4.12s
[INFO] running `Command { std: "docker" "inspect" "17bcda1f73391c5ecb3a2b51c10b15cf358ed956b2b5c96ee29465ebe9ad31ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17bcda1f73391c5ecb3a2b51c10b15cf358ed956b2b5c96ee29465ebe9ad31ae", kill_on_drop: false }`
[INFO] [stdout] 17bcda1f73391c5ecb3a2b51c10b15cf358ed956b2b5c96ee29465ebe9ad31ae
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "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] 65993d15247041da4ba2b7b117a03191c25d99b3e0a945be9302232516070747
[INFO] running `Command { std: "docker" "start" "-a" "65993d15247041da4ba2b7b117a03191c25d99b3e0a945be9302232516070747", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `HashSet`
[INFO] [stderr]  --> src/matching.rs:7:24
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::collections::{HashSet, HashMap};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rex-regex` (lib) generated 1 warning
[INFO] [stderr] warning: `rex-regex` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rex_regex-04a360716363cabe)
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test matcher::tests::test_char_matcher ... ok
[INFO] [stdout] test optimize::tests::test_repr_optimize ... ok
[INFO] [stdout] test parse::tests::test_parse_charset ... ok
[INFO] [stdout] test parse::tests::test_find_closing_paren ... ok
[INFO] [stdout] test parse::tests::test_parse_res_errors ... ok
[INFO] [stdout] test parse::tests::test_parse_res ... ok
[INFO] [stdout] test matcher::tests::test_str_matcher ... ok
[INFO] [stdout] test parse::tests::test_parse_subs ... ok
[INFO] [stdout] test parse::tests::test_parse_manual ... ok
[INFO] [stdout] test parse::tests::test_parse_manual2 ... ok
[INFO] [stdout] test repr::tests::test_re1 ... ok
[INFO] [stdout] test parse::tests::test_parse_repetition_manual ... ok
[INFO] [stdout] test tests::test_notorious_graph ... ok
[INFO] [stdout] test tests::test_alternate ... ok
[INFO] [stdout] test matching::tests::test_match_simple ... ok
[INFO] [stdout] test tests::test_character_classes ... ok
[INFO] [stdout] test tests::test_anchoring ... ok
[INFO] [stdout] test tests::test_submatches ... ok
[INFO] [stdout] test tests::test_specific_repeat ... ok
[INFO] [stdout] test tests::test_simple_repeat ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rex-regex
[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" "65993d15247041da4ba2b7b117a03191c25d99b3e0a945be9302232516070747", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65993d15247041da4ba2b7b117a03191c25d99b3e0a945be9302232516070747", kill_on_drop: false }`
[INFO] [stdout] 65993d15247041da4ba2b7b117a03191c25d99b3e0a945be9302232516070747