[INFO] fetching crate tnt 1.0.1...
[INFO] testing tnt-1.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate tnt 1.0.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate tnt 1.0.1 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 tnt 1.0.1
[INFO] finished tweaking crates.io crate tnt 1.0.1
[INFO] tweaked toml for crates.io crate tnt 1.0.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate tnt 1.0.1 already has a lockfile, it will not be regenerated
[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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 5b0d01c8cea17e608e91bedba51c07865f87ed74c1a6d0cd94dc7c582ec97517
[INFO] running `Command { std: "docker" "start" "-a" "5b0d01c8cea17e608e91bedba51c07865f87ed74c1a6d0cd94dc7c582ec97517", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b0d01c8cea17e608e91bedba51c07865f87ed74c1a6d0cd94dc7c582ec97517", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b0d01c8cea17e608e91bedba51c07865f87ed74c1a6d0cd94dc7c582ec97517", kill_on_drop: false }`
[INFO] [stdout] 5b0d01c8cea17e608e91bedba51c07865f87ed74c1a6d0cd94dc7c582ec97517
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 078c46dd4e4d3fa0bca9763c0819833044cdabab60060e92a82e66d967060b74
[INFO] running `Command { std: "docker" "start" "-a" "078c46dd4e4d3fa0bca9763c0819833044cdabab60060e92a82e66d967060b74", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling fancy-regex v0.5.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling tnt v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.92s
[INFO] running `Command { std: "docker" "inspect" "078c46dd4e4d3fa0bca9763c0819833044cdabab60060e92a82e66d967060b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "078c46dd4e4d3fa0bca9763c0819833044cdabab60060e92a82e66d967060b74", kill_on_drop: false }`
[INFO] [stdout] 078c46dd4e4d3fa0bca9763c0819833044cdabab60060e92a82e66d967060b74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 38c44e71580809b50085a9d676df82fc3891a7e1c81b5d3169b6939f10e198c7
[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" "38c44e71580809b50085a9d676df82fc3891a7e1c81b5d3169b6939f10e198c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling tnt v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.98s
[INFO] running `Command { std: "docker" "inspect" "38c44e71580809b50085a9d676df82fc3891a7e1c81b5d3169b6939f10e198c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38c44e71580809b50085a9d676df82fc3891a7e1c81b5d3169b6939f10e198c7", kill_on_drop: false }`
[INFO] [stdout] 38c44e71580809b50085a9d676df82fc3891a7e1c81b5d3169b6939f10e198c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c4a473c5b07f22649d367b1b04232c899f0832c7574d877d4e227402c43842d4
[INFO] running `Command { std: "docker" "start" "-a" "c4a473c5b07f22649d367b1b04232c899f0832c7574d877d4e227402c43842d4", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 53 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tnt-550150684a423ce9)
[INFO] [stdout] test operations::construction::tests::test_and ... ok
[INFO] [stdout] test operations::production::test::test_interchange_ae_err ... ok
[INFO] [stdout] test operations::production::test::test_induction ... ok
[INFO] [stdout] test operations::construction::tests::test_eq ... ok
[INFO] [stdout] test operations::construction::tests::test_exists ... ok
[INFO] [stdout] test operations::production::test::test_interchange_ea ... ok
[INFO] [stdout] test operations::production::test::test_generalization ... ok
[INFO] [stdout] test operations::construction::tests::test_forall ... ok
[INFO] [stdout] test operations::production::test::test_generalization_err ... ok
[INFO] [stdout] test operations::production::test::test_predecessor ... ok
[INFO] [stdout] test operations::construction::tests::test_or ... ok
[INFO] [stdout] test operations::production::test::test_interchange_ea_err ... ok
[INFO] [stdout] test operations::construction::tests::test_implies ... ok
[INFO] [stdout] test formula::test::test_replace_var ... ok
[INFO] [stdout] test operations::production::test::test_interchange_ae ... ok
[INFO] [stdout] test operations::production::test::test_predecessor_err_1 ... ok
[INFO] [stdout] test operations::production::test::test_symmetry_err ... ok
[INFO] [stdout] test operations::production::test::test_transitivity_err_1_right ... ok
[INFO] [stdout] test operations::production::test::test_successor ... ok
[INFO] [stdout] test operations::production::test::test_transitivity ... ok
[INFO] [stdout] test operations::production::test::test_transitivity_err_1_left ... ok
[INFO] [stdout] test operations::production::test::test_successor_err ... ok
[INFO] [stdout] test operations::production::test::test_symmetry ... ok
[INFO] [stdout] test properties::test::test_is_complex_formula ... ok
[INFO] [stdout] test operations::production::test::test_transitivity_err_2 ... ok
[INFO] [stdout] test properties::test::test_is_equation ... ok
[INFO] [stdout] test properties::test::test_is_formula ... ok
[INFO] [stdout] test operations::production::test::test_specification ... ok
[INFO] [stdout] test string_manip::test::test_left_implies ... ok
[INFO] [stdout] test operations::production::test::test_specification_err2 ... ok
[INFO] [stdout] test properties::test::test_is_num ... ok
[INFO] [stdout] test properties::test::test_is_simple_formula ... ok
[INFO] [stdout] test properties::test::test_is_var ... ok
[INFO] [stdout] test random::test::test_random_number ... ok
[INFO] [stdout] test random::test::test_random_variable ... ok
[INFO] [stdout] test string_manip::test::test_get_bound_vars ... ok
[INFO] [stdout] test operations::construction::tests::test_not ... ok
[INFO] [stdout] test string_manip::test::test_get_vars ... ok
[INFO] [stdout] test string_manip::test::test_split_arithmetic ... ok
[INFO] [stdout] test operations::production::test::test_predecessor_err_2 ... ok
[INFO] [stdout] test terms::test::test_expression ... ok
[INFO] [stdout] test string_manip::test::test_strip_quants ... ok
[INFO] [stdout] test string_manip::test::test_replace_all_re ... ok
[INFO] [stdout] test translate::test::test_to_austere ... ok
[INFO] [stdout] test operations::production::test::test_specification_err1 ... ok
[INFO] [stdout] test random::test::test_random_expression ... ok
[INFO] [stdout] test string_manip::test::test_split_logical ... ok
[INFO] [stdout] test string_manip::test::test_strip_succ_all ... ok
[INFO] [stdout] test translate::test::test_arithmetize ... ok
[INFO] [stdout] test formula::test::test_specify_var ... ok
[INFO] [stdout] test terms::test::test_variable ... ok
[INFO] [stdout] test terms::test::test_number ... ok
[INFO] [stdout] test translate::test::test_to_english ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 53 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tnt
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test src/operations/production.rs - operations::production::existence (line 56) ... FAILED
[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 tnt --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern fancy_regex=/opt/rustwide/target/debug/deps/libfancy_regex-43a418bb59708fae.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-df981c5871754530.rlib --extern num=/opt/rustwide/target/debug/deps/libnum-ac4f092717906044.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-aa117b5b3bd30d0b.rlib --extern tnt=/opt/rustwide/target/debug/deps/libtnt-e9af9d8c033fbdca.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "c4a473c5b07f22649d367b1b04232c899f0832c7574d877d4e227402c43842d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4a473c5b07f22649d367b1b04232c899f0832c7574d877d4e227402c43842d4", kill_on_drop: false }`
[INFO] [stdout] c4a473c5b07f22649d367b1b04232c899f0832c7574d877d4e227402c43842d4