[INFO] fetching crate causal-length 0.2.0...
[INFO] testing causal-length-0.2.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate causal-length 0.2.0 into /workspace/builds/worker-90/source
[INFO] validating manifest of crates.io crate causal-length 0.2.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate causal-length 0.2.0
[INFO] finished tweaking crates.io crate causal-length 0.2.0
[INFO] tweaked toml for crates.io crate causal-length 0.2.0 written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--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-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ec3c60334332e915ab1dca40fda3c18914d26560e2fe4d2177427df7faf5958
[INFO] running `Command { std: "docker" "start" "-a" "8ec3c60334332e915ab1dca40fda3c18914d26560e2fe4d2177427df7faf5958", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ec3c60334332e915ab1dca40fda3c18914d26560e2fe4d2177427df7faf5958", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ec3c60334332e915ab1dca40fda3c18914d26560e2fe4d2177427df7faf5958", kill_on_drop: false }`
[INFO] [stdout] 8ec3c60334332e915ab1dca40fda3c18914d26560e2fe4d2177427df7faf5958
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80fad747fcc47d944ccaddbf85cc624760c0f0e68fdbba76a9be992aab40ee5b
[INFO] running `Command { std: "docker" "start" "-a" "80fad747fcc47d944ccaddbf85cc624760c0f0e68fdbba76a9be992aab40ee5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling causal-length v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.07s
[INFO] running `Command { std: "docker" "inspect" "80fad747fcc47d944ccaddbf85cc624760c0f0e68fdbba76a9be992aab40ee5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80fad747fcc47d944ccaddbf85cc624760c0f0e68fdbba76a9be992aab40ee5b", kill_on_drop: false }`
[INFO] [stdout] 80fad747fcc47d944ccaddbf85cc624760c0f0e68fdbba76a9be992aab40ee5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42e456fb5dfa2044ad440e2f19097d85ca1288be29a8d84496234c612b25e0a7
[INFO] running `Command { std: "docker" "start" "-a" "42e456fb5dfa2044ad440e2f19097d85ca1288be29a8d84496234c612b25e0a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling quickcheck_macros v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling quickcheck v1.0.3
[INFO] [stderr]    Compiling causal-length v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.80s
[INFO] running `Command { std: "docker" "inspect" "42e456fb5dfa2044ad440e2f19097d85ca1288be29a8d84496234c612b25e0a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42e456fb5dfa2044ad440e2f19097d85ca1288be29a8d84496234c612b25e0a7", kill_on_drop: false }`
[INFO] [stdout] 42e456fb5dfa2044ad440e2f19097d85ca1288be29a8d84496234c612b25e0a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 49f146a5cc348fc7077bfdb76916fbc62c5f42d5001a0789f63102aa79808ca7
[INFO] running `Command { std: "docker" "start" "-a" "49f146a5cc348fc7077bfdb76916fbc62c5f42d5001a0789f63102aa79808ca7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/causal_length-3c124002eec3b3a5)
[INFO] [stdout] 
[INFO] [stdout] running 23 tests
[INFO] [stdout] test map::tests::test_add ... ok
[INFO] [stdout] test map::tests::test_merge ... ok
[INFO] [stdout] test map::tests::test_overwrite ... ok
[INFO] [stdout] test map::tests::test_retain ... ok
[INFO] [stdout] test map::tests::test_serialization ... ok
[INFO] [stdout] test map::tests::test_remove ... ok
[INFO] [stdout] test register::tests::test_fup ... ok
[INFO] [stdout] test register::tests::test_merge ... ok
[INFO] [stdout] test register::tests::test_serialization ... ok
[INFO] [stdout] test map::tests::test_order_independence ... ok
[INFO] [stdout] test set::tests::test_add ... ok
[INFO] [stdout] test set::tests::test_merge ... ok
[INFO] [stdout] test set::tests::test_remove ... ok
[INFO] [stdout] test set::tests::test_serialization ... ok
[INFO] [stdout] test set::tests::test_retain ... ok
[INFO] [stdout] test set::tests::test_order_independence ... ok
[INFO] [stdout] test register::tests::is_merge_commutative ... ok
[INFO] [stdout] test map::tests::simple_model::implementation_matches_model ... ok
[INFO] [stdout] test set::tests::implementation_matches_model ... ok
[INFO] [stdout] test set::tests::is_merge_commutative ... ok
[INFO] [stdout] test map::tests::test_merge_commutative ... ok
[INFO] [stdout] test map::tests::is_merge_order_independent ... ok
[INFO] [stdout] test set::tests::is_merge_order_independent ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 23 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests causal-length
[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" "49f146a5cc348fc7077bfdb76916fbc62c5f42d5001a0789f63102aa79808ca7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49f146a5cc348fc7077bfdb76916fbc62c5f42d5001a0789f63102aa79808ca7", kill_on_drop: false }`
[INFO] [stdout] 49f146a5cc348fc7077bfdb76916fbc62c5f42d5001a0789f63102aa79808ca7