[INFO] fetching crate mlsub 0.1.0...
[INFO] testing mlsub-0.1.0 against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296
[INFO] extracting crate mlsub 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate mlsub 0.1.0 on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mlsub 0.1.0
[INFO] finished tweaking crates.io crate mlsub 0.1.0
[INFO] tweaked toml for crates.io crate mlsub 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "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] 8bea43a70c7e97404b195d07c955be35325ab204ab7e6155c3dd316b899032e4
[INFO] running `Command { std: "docker" "start" "-a" "8bea43a70c7e97404b195d07c955be35325ab204ab7e6155c3dd316b899032e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bea43a70c7e97404b195d07c955be35325ab204ab7e6155c3dd316b899032e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bea43a70c7e97404b195d07c955be35325ab204ab7e6155c3dd316b899032e4", kill_on_drop: false }`
[INFO] [stdout] 8bea43a70c7e97404b195d07c955be35325ab204ab7e6155c3dd316b899032e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bccfdc23c47413326d095b73a683657729a41fdb2d28b8af737f98a78e3c22b8
[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" "bccfdc23c47413326d095b73a683657729a41fdb2d28b8af737f98a78e3c22b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling seahash v4.0.1
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling small-ord-set v0.1.2
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling im v15.0.0
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling sized-chunks v0.6.2
[INFO] [stderr]    Compiling mlsub v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/subsume/mod.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             unimplemented!();
[INFO] [stdout]    |             ----------------- any code following this expression is unreachable
[INFO] [stdout] 46 | 
[INFO] [stdout] 47 |             self.remove_flow(pair);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` 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 14.42s
[INFO] running `Command { std: "docker" "inspect" "bccfdc23c47413326d095b73a683657729a41fdb2d28b8af737f98a78e3c22b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bccfdc23c47413326d095b73a683657729a41fdb2d28b8af737f98a78e3c22b8", kill_on_drop: false }`
[INFO] [stdout] bccfdc23c47413326d095b73a683657729a41fdb2d28b8af737f98a78e3c22b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dacd00660be928f8b2308bb8b1ba6b6e6ed01454ed9db631072a64246dcc281
[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" "8dacd00660be928f8b2308bb8b1ba6b6e6ed01454ed9db631072a64246dcc281", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling iter-set v2.0.1
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_xorshift v0.2.0
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/subsume/mod.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             unimplemented!();
[INFO] [stdout]    |             ----------------- any code following this expression is unreachable
[INFO] [stdout] 46 | 
[INFO] [stdout] 47 |             self.remove_flow(pair);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling rusty-fork v0.3.0
[INFO] [stderr]    Compiling proptest v0.10.1
[INFO] [stderr]    Compiling rand_distr v0.3.0
[INFO] [stderr]    Compiling mlsub v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/subsume/mod.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             unimplemented!();
[INFO] [stdout]    |             ----------------- any code following this expression is unreachable
[INFO] [stdout] 46 | 
[INFO] [stdout] 47 |             self.remove_flow(pair);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` 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 32.43s
[INFO] running `Command { std: "docker" "inspect" "8dacd00660be928f8b2308bb8b1ba6b6e6ed01454ed9db631072a64246dcc281", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dacd00660be928f8b2308bb8b1ba6b6e6ed01454ed9db631072a64246dcc281", kill_on_drop: false }`
[INFO] [stdout] 8dacd00660be928f8b2308bb8b1ba6b6e6ed01454ed9db631072a64246dcc281
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ade29b4c496ce4b5d23207139c7cd78b64d0e4a1d8e178ae896a62e17e113e7f
[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" "ade29b4c496ce4b5d23207139c7cd78b64d0e4a1d8e178ae896a62e17e113e7f", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/subsume/mod.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             unimplemented!();
[INFO] [stderr]    |             ----------------- any code following this expression is unreachable
[INFO] [stderr] 46 | 
[INFO] [stderr] 47 |             self.remove_flow(pair);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/subsume/mod.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             unimplemented!();
[INFO] [stderr]    |             ----------------- any code following this expression is unreachable
[INFO] [stderr] 46 | 
[INFO] [stderr] 47 |             self.remove_flow(pair);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mlsub-fa1ebc830caed2bf
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test biunify::tests::constructed ... ok
[INFO] [stdout] test tests::arbitrary::auto_neg ... ok
[INFO] [stdout] test tests::arbitrary::polar_neg ... ok
[INFO] [stdout] test tests::arbitrary::polar_pos ... ok
[INFO] [stdout] test tests::arbitrary::auto_pos ... ok
[INFO] [stdout] test auto::reduce::tests::reduce_one_neg ... ok
[INFO] [stdout] test auto::reduce::tests::reduce_one_pos ... ok
[INFO] [stdout] test biunify::tests::biunify_reduced ... ok
[INFO] [stdout] test biunify::tests::biunify_all_reduced ... ok
[INFO] [stdout] test biunify::tests::biunify_all ... ok
[INFO] [stdout] test biunify::tests::biunify ... test biunify::tests::biunify has been running for over 60 seconds
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "ade29b4c496ce4b5d23207139c7cd78b64d0e4a1d8e178ae896a62e17e113e7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ade29b4c496ce4b5d23207139c7cd78b64d0e4a1d8e178ae896a62e17e113e7f", kill_on_drop: false }`
[INFO] [stdout] ade29b4c496ce4b5d23207139c7cd78b64d0e4a1d8e178ae896a62e17e113e7f