[INFO] fetching crate fcc 0.3.2...
[INFO] testing fcc-0.3.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate fcc 0.3.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate fcc 0.3.2 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fcc 0.3.2
[INFO] finished tweaking crates.io crate fcc 0.3.2
[INFO] tweaked toml for crates.io crate fcc 0.3.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate fcc 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 46ee18db1136db99f7f80698b976982c95a54ff68cda5a3079097cbb4ec75f89
[INFO] running `Command { std: "docker" "start" "-a" "46ee18db1136db99f7f80698b976982c95a54ff68cda5a3079097cbb4ec75f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46ee18db1136db99f7f80698b976982c95a54ff68cda5a3079097cbb4ec75f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46ee18db1136db99f7f80698b976982c95a54ff68cda5a3079097cbb4ec75f89", kill_on_drop: false }`
[INFO] [stdout] 46ee18db1136db99f7f80698b976982c95a54ff68cda5a3079097cbb4ec75f89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7026db761f357e09b29b53dccd92767e2a9d01eae663de1e5694449c7148c039
[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" "7026db761f357e09b29b53dccd92767e2a9d01eae663de1e5694449c7148c039", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling float-cmp v0.6.0
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling predicates v1.0.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling assert_cmd v1.0.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling fcc v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.87s
[INFO] running `Command { std: "docker" "inspect" "7026db761f357e09b29b53dccd92767e2a9d01eae663de1e5694449c7148c039", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7026db761f357e09b29b53dccd92767e2a9d01eae663de1e5694449c7148c039", kill_on_drop: false }`
[INFO] [stdout] 7026db761f357e09b29b53dccd92767e2a9d01eae663de1e5694449c7148c039
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41033f7847a51f896ff8b6d9917ba7a1396722e2990ab5b3c05217d3b4c58a5b
[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" "41033f7847a51f896ff8b6d9917ba7a1396722e2990ab5b3c05217d3b4c58a5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling fcc v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `Command { std: "docker" "inspect" "41033f7847a51f896ff8b6d9917ba7a1396722e2990ab5b3c05217d3b4c58a5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41033f7847a51f896ff8b6d9917ba7a1396722e2990ab5b3c05217d3b4c58a5b", kill_on_drop: false }`
[INFO] [stdout] 41033f7847a51f896ff8b6d9917ba7a1396722e2990ab5b3c05217d3b4c58a5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5a389054aac5614a4501daf594c23cc4f1c85ee2dab245a427ba9b12ef3e249a
[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" "5a389054aac5614a4501daf594c23cc4f1c85ee2dab245a427ba9b12ef3e249a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 11 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fcc-cc5507e6b2e8e451
[INFO] [stdout] test concat::tests::test_seek_vec0 ... ok
[INFO] [stdout] test concat::tests::test_seek_back_vec0 ... ok
[INFO] [stdout] test concat::tests::test_seek_back_vec1 ... ok
[INFO] [stdout] test concat::tests::test_seek_back_vec3 ... ok
[INFO] [stdout] test concat::tests::test_seek_nth_back ... ok
[INFO] [stdout] test concat::tests::test_seek_back_vecn ... ok
[INFO] [stdout] test concat::tests::test_seek_vec1 ... ok
[INFO] [stdout] test concat::tests::test_seek_vec3 ... ok
[INFO] [stdout] test concat::tests::test_seek_vecn ... ok
[INFO] [stdout] test concat::tests::test_vecu8 ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fcc-f7a0a4ab1038dbb3
[INFO] [stdout] test concat::tests::test_seek_nth ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fcc
[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 21 tests
[INFO] [stdout] test src/concat.rs - concat::Concat<P>::pad_with (line 195) ... ok
[INFO] [stdout] test src/concat.rs - concat::Concat (line 23) ... ok
[INFO] [stdout] test src/concat.rs - concat::Concat<P>::skip_start (line 127) ... ok
[INFO] [stdout] test src/concat.rs - concat::Concat<P>::get_header (line 233) ... ok
[INFO] [stdout] test src/concat.rs - concat::Concat<P>::skip_end (line 147) ... ok
[INFO] [stdout] test src/concat.rs - concat::Concat<P>::new (line 56) ... ok
[INFO] [stdout] test src/concat.rs - concat::Concat<P>::newline (line 107) ... ok
[INFO] [stdout] test src/concat.rs - concat::Concat<P>::header (line 173) ... ok
[INFO] [stdout] test src/concat.rs - concat::Concat<P>::open (line 80) ... ok
[INFO] [stdout] test src/concat.rs - concat::Concat<P>::write (line 259) ... ok
[INFO] [stdout] test src/concat.rs - concat::Concat<P>::use_crlf (line 214) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] test src/util.rs - util::ends_with_newline (line 54) ... ok
[INFO] [stdout] test src/concat.rs - concat::ByteSeeker::new (line 445) ... ok
[INFO] [stdout] test src/concat.rs - concat::ByteSeeker::seek (line 597) ... ok
[INFO] [stdout] test src/concat.rs - concat::ByteSeeker::seek_nth (line 517) ... ok
[INFO] [stdout] test src/concat.rs - concat::ByteSeeker (line 415) ... ok
[INFO] [stdout] test src/concat.rs - concat::ByteSeeker::seek_back (line 679) ... ok
[INFO] [stdout] test src/concat.rs - concat::ByteSeeker::reset (line 479) ... ok
[INFO] [stdout] test src/util.rs - util::get_last_byte (line 20) ... ok
[INFO] [stdout] test src/concat.rs - concat::ByteSeeker::seek_nth_back (line 556) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.26s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5a389054aac5614a4501daf594c23cc4f1c85ee2dab245a427ba9b12ef3e249a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a389054aac5614a4501daf594c23cc4f1c85ee2dab245a427ba9b12ef3e249a", kill_on_drop: false }`
[INFO] [stdout] 5a389054aac5614a4501daf594c23cc4f1c85ee2dab245a427ba9b12ef3e249a