[INFO] fetching crate imag-diagnostics 0.10.1...
[INFO] checking imag-diagnostics-0.10.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate imag-diagnostics 0.10.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate imag-diagnostics 0.10.1 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 imag-diagnostics 0.10.1
[INFO] finished tweaking crates.io crate imag-diagnostics 0.10.1
[INFO] tweaked toml for crates.io crate imag-diagnostics 0.10.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate imag-diagnostics 0.10.1 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 darling_core v0.8.6
[INFO] [stderr]   Downloaded synstructure v0.12.3
[INFO] [stderr]   Downloaded failure_derive v0.1.6
[INFO] [stderr]   Downloaded is-match v0.1.0
[INFO] [stderr]   Downloaded darling_macro v0.8.6
[INFO] [stderr]   Downloaded darling v0.8.6
[INFO] [stderr]   Downloaded toml-query_derive v0.9.2
[INFO] [stderr]   Downloaded libimaginteraction v0.10.1
[INFO] [stderr]   Downloaded pest_generator v2.1.2
[INFO] [stderr]   Downloaded libimagutil v0.10.1
[INFO] [stderr]   Downloaded indicatif v0.12.0
[INFO] [stderr]   Downloaded smallvec v1.2.0
[INFO] [stderr]   Downloaded libimagrt v0.10.1
[INFO] [stderr]   Downloaded chrono v0.4.10
[INFO] [stderr]   Downloaded ucd-trie v0.1.2
[INFO] [stderr]   Downloaded interactor v0.1.1
[INFO] [stderr]   Downloaded libimagerror v0.10.1
[INFO] [stderr]   Downloaded serde_json v1.0.48
[INFO] [stderr]   Downloaded backtrace v0.3.44
[INFO] [stderr]   Downloaded winapi-util v0.1.3
[INFO] [stderr]   Downloaded backtrace-sys v0.1.32
[INFO] [stderr]   Downloaded failure v0.1.6
[INFO] [stderr]   Downloaded libimagentrylink v0.10.1
[INFO] [stderr]   Downloaded term_size v0.3.1
[INFO] [stderr]   Downloaded libimagstore v0.10.1
[INFO] [stderr]   Downloaded resiter v0.4.0
[INFO] [stderr]   Downloaded toml-query v0.9.2
[INFO] [stderr]   Downloaded xdg-basedir v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8c4be5da35ae3d096689f6fc2abb76a927181535cbbd3860077a5edbb5f67b62
[INFO] running `Command { std: "docker" "start" "-a" "8c4be5da35ae3d096689f6fc2abb76a927181535cbbd3860077a5edbb5f67b62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c4be5da35ae3d096689f6fc2abb76a927181535cbbd3860077a5edbb5f67b62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c4be5da35ae3d096689f6fc2abb76a927181535cbbd3860077a5edbb5f67b62", kill_on_drop: false }`
[INFO] [stdout] 8c4be5da35ae3d096689f6fc2abb76a927181535cbbd3860077a5edbb5f67b62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] d19fe29114422f065a9ed70af2fe7eeb057fc6f04eec27b23cc6952e55963628
[INFO] running `Command { std: "docker" "start" "-a" "d19fe29114422f065a9ed70af2fe7eeb057fc6f04eec27b23cc6952e55963628", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.9
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking is-match v0.1.0
[INFO] [stderr]     Checking boolinator v2.4.0
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking libimagutil v0.10.1
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]    Compiling pest_generator v2.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking hashbrown v0.5.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking libimagerror v0.10.1
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking interactor v0.1.1
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking console v0.9.2
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking xdg-basedir v1.0.0
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking resiter v0.4.0
[INFO] [stderr]     Checking indicatif v0.12.0
[INFO] [stderr]     Checking handlebars v2.0.4
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling toml-query_derive v0.9.2
[INFO] [stderr]     Checking toml-query v0.9.2
[INFO] [stderr]     Checking libimagstore v0.10.1
[INFO] [stderr]     Checking libimaginteraction v0.10.1
[INFO] [stderr]     Checking libimagentrylink v0.10.1
[INFO] [stderr]     Checking libimagrt v0.10.1
[INFO] [stderr]     Checking imag-diagnostics v0.10.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.25s
[INFO] running `Command { std: "docker" "inspect" "d19fe29114422f065a9ed70af2fe7eeb057fc6f04eec27b23cc6952e55963628", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d19fe29114422f065a9ed70af2fe7eeb057fc6f04eec27b23cc6952e55963628", kill_on_drop: false }`
[INFO] [stdout] d19fe29114422f065a9ed70af2fe7eeb057fc6f04eec27b23cc6952e55963628
[INFO] checking imag-diagnostics-0.10.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate imag-diagnostics 0.10.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate imag-diagnostics 0.10.1 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 imag-diagnostics 0.10.1
[INFO] finished tweaking crates.io crate imag-diagnostics 0.10.1
[INFO] tweaked toml for crates.io crate imag-diagnostics 0.10.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate imag-diagnostics 0.10.1 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 92261ec0b70afa6137a805b0887159a0afb9ccc67f56b266cf75e88ac3641c6e
[INFO] running `Command { std: "docker" "start" "-a" "92261ec0b70afa6137a805b0887159a0afb9ccc67f56b266cf75e88ac3641c6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92261ec0b70afa6137a805b0887159a0afb9ccc67f56b266cf75e88ac3641c6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92261ec0b70afa6137a805b0887159a0afb9ccc67f56b266cf75e88ac3641c6e", kill_on_drop: false }`
[INFO] [stdout] 92261ec0b70afa6137a805b0887159a0afb9ccc67f56b266cf75e88ac3641c6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ee173459bf36400840845cbe07f8ca2dbadf5da780a7d53760ef2eb3507d5d5c
[INFO] running `Command { std: "docker" "start" "-a" "ee173459bf36400840845cbe07f8ca2dbadf5da780a7d53760ef2eb3507d5d5c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking aho-corasick v0.7.9
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.3.4/src/exec.rs:836:13
[INFO] [stdout]     |
[INFO] [stdout] 836 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 837 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 838 | |                 self.cache.value(),
[INFO] [stdout] 839 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 850 | |                 Quit => return Some(Quit),
[INFO] [stdout] 851 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling pest v2.1.3
[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" "ee173459bf36400840845cbe07f8ca2dbadf5da780a7d53760ef2eb3507d5d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee173459bf36400840845cbe07f8ca2dbadf5da780a7d53760ef2eb3507d5d5c", kill_on_drop: false }`
[INFO] [stdout] ee173459bf36400840845cbe07f8ca2dbadf5da780a7d53760ef2eb3507d5d5c