[INFO] fetching crate lambda_calculus 3.0.2...
[INFO] testing lambda_calculus-3.0.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate lambda_calculus 3.0.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate lambda_calculus 3.0.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lambda_calculus 3.0.2
[INFO] finished tweaking crates.io crate lambda_calculus 3.0.2
[INFO] tweaked toml for crates.io crate lambda_calculus 3.0.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.55.0" "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] d0edf406fc96703f579c952c28deac40ffe17ed161440d9d98264da8990f6b3e
[INFO] running `Command { std: "docker" "start" "-a" "d0edf406fc96703f579c952c28deac40ffe17ed161440d9d98264da8990f6b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0edf406fc96703f579c952c28deac40ffe17ed161440d9d98264da8990f6b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0edf406fc96703f579c952c28deac40ffe17ed161440d9d98264da8990f6b3e", kill_on_drop: false }`
[INFO] [stdout] d0edf406fc96703f579c952c28deac40ffe17ed161440d9d98264da8990f6b3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.55.0" "build" "--frozen" "--message-format=json", 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] bb21b0167e5a6e59428a1ea997cfe21ed63c28c9e3d09d0018672ad1377b549f
[INFO] running `Command { std: "docker" "start" "-a" "bb21b0167e5a6e59428a1ea997cfe21ed63c28c9e3d09d0018672ad1377b549f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lambda_calculus v3.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `Command { std: "docker" "inspect" "bb21b0167e5a6e59428a1ea997cfe21ed63c28c9e3d09d0018672ad1377b549f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb21b0167e5a6e59428a1ea997cfe21ed63c28c9e3d09d0018672ad1377b549f", kill_on_drop: false }`
[INFO] [stdout] bb21b0167e5a6e59428a1ea997cfe21ed63c28c9e3d09d0018672ad1377b549f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f24215169b8f8fcbe22b874d21ad0e6e517d37876ca005b3c126f463e62b6630
[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" "f24215169b8f8fcbe22b874d21ad0e6e517d37876ca005b3c126f463e62b6630", kill_on_drop: false }`
[INFO] [stderr]    Compiling lambda_calculus v3.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `Command { std: "docker" "inspect" "f24215169b8f8fcbe22b874d21ad0e6e517d37876ca005b3c126f463e62b6630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f24215169b8f8fcbe22b874d21ad0e6e517d37876ca005b3c126f463e62b6630", kill_on_drop: false }`
[INFO] [stdout] f24215169b8f8fcbe22b874d21ad0e6e517d37876ca005b3c126f463e62b6630
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5c2c70b7255ffcc83c87f977c7b41b4bf867f34e3be60f75f12c1d79fe52d1a7
[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" "5c2c70b7255ffcc83c87f977c7b41b4bf867f34e3be60f75f12c1d79fe52d1a7", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] running 13 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lambda_calculus-1845323ae1165af3)
[INFO] [stdout] test parser::tests::alternative_lambda_parsing ... ok
[INFO] [stdout] test parser::tests::parse_quine ... ok
[INFO] [stdout] test parser::tests::parse_y ... ok
[INFO] [stdout] test parser::tests::tokenization_error ... ok
[INFO] [stdout] test parser::tests::succ_ast ... ok
[INFO] [stdout] test term::tests::app_macro ... ok
[INFO] [stdout] test parser::tests::parse_blc ... ok
[INFO] [stdout] test parser::tests::tokenization_success ... ok
[INFO] [stdout] test parser::tests::tokenization_success_classic ... ok
[INFO] [stdout] test term::tests::abs_macro ... ok
[INFO] [stderr]      Running tests/lists.rs (/opt/rustwide/target/debug/deps/lists-db7515495aab0065)
[INFO] [stdout] test term::tests::display_modes ... ok
[INFO] [stdout] test term::tests::is_supercombinator ... ok
[INFO] [stdout] test term::tests::open_term_display ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running tests/num.rs (/opt/rustwide/target/debug/deps/num-a9e6a71f0c75e295)
[INFO] [stdout] test list_head ... ok
[INFO] [stdout] test list_tail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test church_max ... ok
[INFO] [stdout] test church_pow ... ok
[INFO] [stdout] test church_min ... ok
[INFO] [stdout] test parigot_sub ... ok
[INFO] [stdout] test church_shl ... ok
[INFO] [stdout] test church_quot ... ok
[INFO] [stdout] test church_rem ... ok
[INFO] [stdout] test church_fac ... ok
[INFO] [stdout] test church_sub ... ok
[INFO] [stdout] test church_mul ... ok
[INFO] [stdout] test parigot_add ... ok
[INFO] [stdout] test parigot_mul ... ok
[INFO] [stdout] test scott_add ... ok
[INFO] [stdout] test stumpfu_add ... ok
[INFO] [stdout] test stumpfu_mul ... ok
[INFO] [stdout] test church_div ... ok
[INFO] [stdout] test scott_mul ... ok
[INFO] [stdout] test num_pred ... ok
[INFO] [stdout] test church_add ... ok
[INFO] [stdout] test num_succ ... ok
[INFO] [stdout] test church_shr ... ok
[INFO] [stdout] test scott_pow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/option.rs (/opt/rustwide/target/debug/deps/option-e158e68450ea7a96)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test option_is_some ... ok
[INFO] [stdout] test option_some ... ok
[INFO] [stdout] test option_unwrap_or ... ok
[INFO] [stdout] test option_map ... ok
[INFO] [stdout] test option_none ... ok
[INFO] [stdout] test option_and_then ... ok
[INFO] [stderr]      Running tests/pair_list.rs (/opt/rustwide/target/debug/deps/pair_list-bf66c4d992fc04b8)
[INFO] [stdout] test option_is_none ... ok
[INFO] [stdout] test option_map_or ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test pair_list_index ... ok
[INFO] [stdout] test pair_list_length ... ok
[INFO] [stdout] test pair_list_replicate ... ok
[INFO] [stdout] test pair_list_tail ... ok
[INFO] [stdout] test pair_list_reverse ... ok
[INFO] [stdout] test pair_list_append ... ok
[INFO] [stdout] test pair_list_drop ... ok
[INFO] [stdout] test pair_list_head ... ok
[INFO] [stdout] test pair_list_list ... ok
[INFO] [stdout] test pair_list_drop_while ... ok
[INFO] [stderr]      Running tests/reduction.rs (/opt/rustwide/target/debug/deps/reduction-52a66764a4e23088)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test reduction_huge ... ignored
[INFO] [stdout] test reduction_nor ... ok
[INFO] [stdout] test reduction_app ... ok
[INFO] [stderr]      Running tests/signed.rs (/opt/rustwide/target/debug/deps/signed-205375d8c8da3266)
[INFO] [stdout] test reduction_cbn ... ok
[INFO] [stdout] test reduction_cbv ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test signed_modulus ... ok
[INFO] [stdout] test signed_neg ... ok
[INFO] [stdout] test signed_mul ... ok
[INFO] [stdout] test signed_simplify ... ok
[INFO] [stdout] test signed_sub ... ok
[INFO] [stderr]    Doc-tests lambda_calculus
[INFO] [stdout] test signed_add ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.19s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name lambda_calculus --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern lambda_calculus=/opt/rustwide/target/debug/deps/liblambda_calculus-8f7f675f7dc6a0e3.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="encoding"' --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "5c2c70b7255ffcc83c87f977c7b41b4bf867f34e3be60f75f12c1d79fe52d1a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c2c70b7255ffcc83c87f977c7b41b4bf867f34e3be60f75f12c1d79fe52d1a7", kill_on_drop: false }`
[INFO] [stdout] 5c2c70b7255ffcc83c87f977c7b41b4bf867f34e3be60f75f12c1d79fe52d1a7