[INFO] fetching crate wmath 0.3.8...
[INFO] checking wmath-0.3.8 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate wmath 0.3.8 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate wmath 0.3.8 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wmath 0.3.8
[INFO] removed 1 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate wmath 0.3.8
[INFO] tweaked toml for crates.io crate wmath 0.3.8 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate wmath 0.3.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded implements v0.1.1
[INFO] [stderr]   Downloaded is_slice v0.1.1
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[INFO] [stderr]   Downloaded for_each v0.1.3
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[INFO] [stderr]   Downloaded nalgebra v0.31.0
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[INFO] [stderr]   Downloaded type_constructor v0.1.19
[INFO] [stderr]   Downloaded proc_macro_tools v0.1.17
[INFO] [stderr]   Downloaded former_meta v0.1.12
[INFO] [stderr]   Downloaded former v0.1.12
[INFO] [stderr]   Downloaded meta_tools v0.2.17
[INFO] [stderr]   Downloaded parse-display-derive v0.5.5
[INFO] [stderr]   Downloaded parse-display v0.5.5
[INFO] [stderr]   Downloaded woptions_meta v0.1.3
[INFO] [stderr]   Downloaded former_runtime v0.1.11
[INFO] [stderr]   Downloaded woptions_runtime v0.1.3
[INFO] [stderr]   Downloaded woptions v0.1.3
[INFO] [stderr]   Downloaded rustversion v1.0.8
[INFO] [stderr]   Downloaded typing_tools v0.1.5
[INFO] [stderr]   Downloaded wtest_basic v0.1.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46c9764b0f56852e59b21d56464048a22536fd5e0431662c0f07ba0ee64d04e3
[INFO] running `Command { std: "docker" "start" "-a" "46c9764b0f56852e59b21d56464048a22536fd5e0431662c0f07ba0ee64d04e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46c9764b0f56852e59b21d56464048a22536fd5e0431662c0f07ba0ee64d04e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46c9764b0f56852e59b21d56464048a22536fd5e0431662c0f07ba0ee64d04e3", kill_on_drop: false }`
[INFO] [stdout] 46c9764b0f56852e59b21d56464048a22536fd5e0431662c0f07ba0ee64d04e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e542b4c6b976f1ce2a9ae12f6dfa852665c7dd3fbf8ba4a8ea2cbe23530c2d77
[INFO] running `Command { std: "docker" "start" "-a" "e542b4c6b976f1ce2a9ae12f6dfa852665c7dd3fbf8ba4a8ea2cbe23530c2d77", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling winterval v0.1.5
[INFO] [stderr]    Compiling type_constructor v0.1.19
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling mod_interface_runtime v0.1.1
[INFO] [stderr]    Compiling for_each v0.1.3
[INFO] [stderr]     Checking former_runtime v0.1.11
[INFO] [stderr]    Compiling literally v0.1.3
[INFO] [stderr]    Compiling serde v1.0.139
[INFO] [stderr]    Compiling convert_case v0.5.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling serde_derive v1.0.139
[INFO] [stderr]    Compiling rustversion v1.0.8
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]     Checking mem_tools v0.1.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]    Compiling trybuild v1.0.63
[INFO] [stderr]    Compiling math_adapter v0.3.6
[INFO] [stderr]     Checking pretty_assertions v1.2.1
[INFO] [stderr]     Checking is_slice v0.1.1
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking implements v0.1.1
[INFO] [stderr]     Checking dissimilar v1.0.4
[INFO] [stderr]     Checking inspect_type v0.1.2
[INFO] [stderr]     Checking diagnostics_tools v0.1.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
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[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking data_type v0.1.9
[INFO] [stderr]    Compiling iter_tools v0.1.4
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]    Compiling proc_macro_tools v0.1.17
[INFO] [stderr]    Compiling structmeta-derive v0.1.5
[INFO] [stderr]    Compiling clone_dyn_meta v0.1.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling impls_index_meta v0.1.1
[INFO] [stderr]    Compiling former_meta v0.1.12
[INFO] [stderr]    Compiling impls_index v0.1.3
[INFO] [stderr]    Compiling clone_dyn v0.1.0
[INFO] [stderr]     Checking former v0.1.12
[INFO] [stderr]     Checking woptions_runtime v0.1.3
[INFO] [stderr]    Compiling structmeta v0.1.5
[INFO] [stderr]    Compiling parse-display-derive v0.5.5
[INFO] [stderr]    Compiling parse-display v0.5.5
[INFO] [stderr]    Compiling derive_tools v0.1.5
[INFO] [stderr]    Compiling mod_interface_meta v0.1.9
[INFO] [stderr]    Compiling mod_interface v0.1.13
[INFO] [stderr]    Compiling meta_tools_min v0.2.12
[INFO] [stderr]    Compiling woptions_meta v0.1.3
[INFO] [stderr]     Checking woptions v0.1.3
[INFO] [stderr]     Checking meta_tools v0.2.17
[INFO] [stderr]     Checking wtest_basic v0.1.14
[INFO] [stderr]     Checking test_tools v0.1.5
[INFO] [stderr]     Checking wmath v0.3.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.27s
[INFO] running `Command { std: "docker" "inspect" "e542b4c6b976f1ce2a9ae12f6dfa852665c7dd3fbf8ba4a8ea2cbe23530c2d77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e542b4c6b976f1ce2a9ae12f6dfa852665c7dd3fbf8ba4a8ea2cbe23530c2d77", kill_on_drop: false }`
[INFO] [stdout] e542b4c6b976f1ce2a9ae12f6dfa852665c7dd3fbf8ba4a8ea2cbe23530c2d77
[INFO] checking wmath-0.3.8 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate wmath 0.3.8 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate wmath 0.3.8 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wmath 0.3.8
[INFO] removed 1 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate wmath 0.3.8
[INFO] tweaked toml for crates.io crate wmath 0.3.8 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate wmath 0.3.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61b7648ba820a0b6945f07ec9a2bd34d876a729099d507c4aa3ebbfebe37d1df
[INFO] running `Command { std: "docker" "start" "-a" "61b7648ba820a0b6945f07ec9a2bd34d876a729099d507c4aa3ebbfebe37d1df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61b7648ba820a0b6945f07ec9a2bd34d876a729099d507c4aa3ebbfebe37d1df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61b7648ba820a0b6945f07ec9a2bd34d876a729099d507c4aa3ebbfebe37d1df", kill_on_drop: false }`
[INFO] [stdout] 61b7648ba820a0b6945f07ec9a2bd34d876a729099d507c4aa3ebbfebe37d1df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b3a097cc6b64bc33bd8583f959aca8fe25d0219d153f9f5dc49d1f6b8ce50d8
[INFO] running `Command { std: "docker" "start" "-a" "4b3a097cc6b64bc33bd8583f959aca8fe25d0219d153f9f5dc49d1f6b8ce50d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling type_constructor v0.1.19
[INFO] [stderr]    Compiling winterval v0.1.5
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling mod_interface_runtime v0.1.1
[INFO] [stderr]    Compiling literally v0.1.3
[INFO] [stderr]     Checking former_runtime v0.1.11
[INFO] [stderr]    Compiling for_each v0.1.3
[INFO] [stderr]    Compiling serde v1.0.139
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling convert_case v0.5.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde_derive v1.0.139
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]    Compiling anyhow v1.0.58
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]    Compiling trybuild v1.0.63
[INFO] [stderr]     Checking mem_tools v0.1.1
[INFO] [stderr]    Compiling rustversion v1.0.8
[INFO] [stderr]     Checking pretty_assertions v1.2.1
[INFO] [stderr]    Compiling math_adapter v0.3.6
[INFO] [stderr]     Checking dissimilar v1.0.4
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking implements v0.1.1
[INFO] [stderr]     Checking is_slice v0.1.1
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking inspect_type v0.1.2
[INFO] [stderr]     Checking diagnostics_tools v0.1.3
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking typing_tools v0.1.5
[INFO] [stderr]     Checking data_type v0.1.9
[INFO] [stderr]    Compiling iter_tools v0.1.4
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.6.0/src/exec.rs:848:13
[INFO] [stdout]     |
[INFO] [stdout] 848 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 849 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 850 | |                 self.cache.value(),
[INFO] [stdout] 851 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 862 | |                 Quit => return Some(Quit),
[INFO] [stdout] 863 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4b3a097cc6b64bc33bd8583f959aca8fe25d0219d153f9f5dc49d1f6b8ce50d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b3a097cc6b64bc33bd8583f959aca8fe25d0219d153f9f5dc49d1f6b8ce50d8", kill_on_drop: false }`
[INFO] [stdout] 4b3a097cc6b64bc33bd8583f959aca8fe25d0219d153f9f5dc49d1f6b8ce50d8