[INFO] fetching crate blc 0.6.0...
[INFO] testing blc-0.6.0 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate blc 0.6.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate blc 0.6.0 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blc 0.6.0
[INFO] finished tweaking crates.io crate blc 0.6.0
[INFO] tweaked toml for crates.io crate blc 0.6.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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] 57dec61f129037670f0a86deb09b614efb5c75decd61e5e990b98cff5cd91f2a
[INFO] running `Command { std: "docker" "start" "-a" "57dec61f129037670f0a86deb09b614efb5c75decd61e5e990b98cff5cd91f2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57dec61f129037670f0a86deb09b614efb5c75decd61e5e990b98cff5cd91f2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57dec61f129037670f0a86deb09b614efb5c75decd61e5e990b98cff5cd91f2a", kill_on_drop: false }`
[INFO] [stdout] 57dec61f129037670f0a86deb09b614efb5c75decd61e5e990b98cff5cd91f2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 525c4ccb4c2c0144e206999140d7fb4d48eca35c47e87488fccf5eb3c1ca901c
[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" "525c4ccb4c2c0144e206999140d7fb4d48eca35c47e87488fccf5eb3c1ca901c", kill_on_drop: false }`
[INFO] [stderr]    Compiling lambda_calculus v2.2.0
[INFO] [stderr]    Compiling blc v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/pair_list.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 |     mem::replace(term, tail.clone()); // replace term with tail
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `Command { std: "docker" "inspect" "525c4ccb4c2c0144e206999140d7fb4d48eca35c47e87488fccf5eb3c1ca901c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "525c4ccb4c2c0144e206999140d7fb4d48eca35c47e87488fccf5eb3c1ca901c", kill_on_drop: false }`
[INFO] [stdout] 525c4ccb4c2c0144e206999140d7fb4d48eca35c47e87488fccf5eb3c1ca901c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c15bff17082ff947d8449004aa58f66872b947562bd138c12ac72ec4e8f85c6
[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" "3c15bff17082ff947d8449004aa58f66872b947562bd138c12ac72ec4e8f85c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling blc v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/pair_list.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 |     mem::replace(term, tail.clone()); // replace term with tail
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/pair_list.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 |     mem::replace(term, tail.clone()); // replace term with tail
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "3c15bff17082ff947d8449004aa58f66872b947562bd138c12ac72ec4e8f85c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c15bff17082ff947d8449004aa58f66872b947562bd138c12ac72ec4e8f85c6", kill_on_drop: false }`
[INFO] [stdout] 3c15bff17082ff947d8449004aa58f66872b947562bd138c12ac72ec4e8f85c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 507744667cccbb6db0b26d52f3c5a650e121c664a249908ec54f20917ce24e3d
[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" "507744667cccbb6db0b26d52f3c5a650e121c664a249908ec54f20917ce24e3d", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/pair_list.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     mem::replace(term, tail.clone()); // replace term with tail
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/pair_list.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     mem::replace(term, tail.clone()); // replace term with tail
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/blc-9eb2ea9716e3519b)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test encoding::binary::test::abstractions ... ok
[INFO] [stdout] test encoding::binary::test::compress_decompress ... ok
[INFO] [stdout] test encoding::binary::test::decompression ... ok
[INFO] [stdout] test encoding::binary::test::from_bits_and_back ... ok
[INFO] [stdout] test encoding::binary::test::ignoring_whitespaces ... ok
[INFO] [stdout] test encoding::binary::test::compression ... ok
[INFO] [stderr]      Running tests/deflate.rs (/opt/rustwide/target/debug/deps/deflate-2ea087d5d83eee94)
[INFO] [stdout] test encoding::lambda::test::decode_encode_lambda ... ok
[INFO] [stdout] test encoding::binary::test::applications ... ok
[INFO] [stdout] test encoding::lambda::test::decoding_lambda ... ok
[INFO] [stdout] test encoding::lambda::test::encoding_lambda ... ok
[INFO] [stdout] test encoding::binary::test::variables ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test deflate ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/fizzbuzz.rs (/opt/rustwide/target/debug/deps/fizzbuzz-03099e5d926c9409)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/identity.rs (/opt/rustwide/target/debug/deps/identity-5092823bb61600d5)
[INFO] [stdout] test fizz_buzz ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.22s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test identity ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/inflate.rs (/opt/rustwide/target/debug/deps/inflate-204fb1d92fc6b1d9)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test inflate ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/repeat.rs (/opt/rustwide/target/debug/deps/repeat-81d9ef84a504effd)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/sort.rs (/opt/rustwide/target/debug/deps/sort-15e3c5eb56684599)
[INFO] [stdout] running 1 test
[INFO] [stdout] test repeat ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test sort ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.18s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests blc
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/encoding/binary.rs - encoding::binary::from_bits (line 16) ... ok
[INFO] [stdout] test src/encoding/lambda.rs - encoding::lambda::decode (line 12) ... ok
[INFO] [stdout] test src/encoding/binary.rs - encoding::binary::compress (line 110) ... ok
[INFO] [stdout] test src/encoding/binary.rs - encoding::binary::decompress (line 143) ... ok
[INFO] [stdout] test src/encoding/lambda.rs - encoding::lambda::encode (line 65) ... ok
[INFO] [stdout] test src/execution.rs - execution::run (line 31) ... ok
[INFO] [stdout] test src/encoding/binary.rs - encoding::binary::to_bits (line 73) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.89s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "507744667cccbb6db0b26d52f3c5a650e121c664a249908ec54f20917ce24e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "507744667cccbb6db0b26d52f3c5a650e121c664a249908ec54f20917ce24e3d", kill_on_drop: false }`
[INFO] [stdout] 507744667cccbb6db0b26d52f3c5a650e121c664a249908ec54f20917ce24e3d