[INFO] cloning repository https://github.com/barrowsys/timemachine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/barrowsys/timemachine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarrowsys%2Ftimemachine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarrowsys%2Ftimemachine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2488fa717779f49c250a0e1596c88b5a3335f283
[INFO] checking barrowsys/timemachine against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarrowsys%2Ftimemachine" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/barrowsys/timemachine 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 git repo https://github.com/barrowsys/timemachine
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/barrowsys/timemachine
[INFO] tweaked toml for git repo https://github.com/barrowsys/timemachine written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/barrowsys/timemachine 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 once_cell v1.7.1
[INFO] [stderr]   Downloaded zeroize v0.9.3
[INFO] [stderr]   Downloaded security-framework v2.1.2
[INFO] [stderr]   Downloaded console v0.13.0
[INFO] [stderr]   Downloaded dialoguer v0.7.1
[INFO] [stderr]   Downloaded napchart v0.1.5
[INFO] [stderr]   Downloaded tokio v1.3.0
[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] 2e00eeaa70affc7e7d3cfc418a14be2fa27585a370a49e78b9bd78127f827506
[INFO] running `Command { std: "docker" "start" "-a" "2e00eeaa70affc7e7d3cfc418a14be2fa27585a370a49e78b9bd78127f827506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e00eeaa70affc7e7d3cfc418a14be2fa27585a370a49e78b9bd78127f827506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e00eeaa70affc7e7d3cfc418a14be2fa27585a370a49e78b9bd78127f827506", kill_on_drop: false }`
[INFO] [stdout] 2e00eeaa70affc7e7d3cfc418a14be2fa27585a370a49e78b9bd78127f827506
[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] cf4addab876ea25be2c9fe2f0722d163b71c0fa8e5afb42af8f75b526059718f
[INFO] running `Command { std: "docker" "start" "-a" "cf4addab876ea25be2c9fe2f0722d163b71c0fa8e5afb42af8f75b526059718f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking once_cell v1.7.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking zeroize v0.9.3
[INFO] [stderr]     Checking timemachine v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking terminal_size v0.1.16
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking console v0.13.0
[INFO] [stderr]     Checking console v0.14.0
[INFO] [stderr]     Checking dialoguer v0.7.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "cf4addab876ea25be2c9fe2f0722d163b71c0fa8e5afb42af8f75b526059718f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf4addab876ea25be2c9fe2f0722d163b71c0fa8e5afb42af8f75b526059718f", kill_on_drop: false }`
[INFO] [stdout] cf4addab876ea25be2c9fe2f0722d163b71c0fa8e5afb42af8f75b526059718f
[INFO] checking barrowsys/timemachine against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarrowsys%2Ftimemachine" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/barrowsys/timemachine 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 git repo https://github.com/barrowsys/timemachine
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/barrowsys/timemachine
[INFO] tweaked toml for git repo https://github.com/barrowsys/timemachine written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/barrowsys/timemachine 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] 154053511f725b791ca1cf1de1768deed9ff3c85b769ff8c575874faa0145c33
[INFO] running `Command { std: "docker" "start" "-a" "154053511f725b791ca1cf1de1768deed9ff3c85b769ff8c575874faa0145c33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "154053511f725b791ca1cf1de1768deed9ff3c85b769ff8c575874faa0145c33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "154053511f725b791ca1cf1de1768deed9ff3c85b769ff8c575874faa0145c33", kill_on_drop: false }`
[INFO] [stdout] 154053511f725b791ca1cf1de1768deed9ff3c85b769ff8c575874faa0145c33
[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] 4df648d8085dc56f02d1b1f9d1f61cc20597116f04ea509783dfbb6ad7f0df8b
[INFO] running `Command { std: "docker" "start" "-a" "4df648d8085dc56f02d1b1f9d1f61cc20597116f04ea509783dfbb6ad7f0df8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking once_cell v1.7.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking zeroize v0.9.3
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking timemachine v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking terminal_size v0.1.16
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.4.3/src/exec.rs:841:13
[INFO] [stdout]     |
[INFO] [stdout] 841 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 842 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 843 | |                 self.cache.value(),
[INFO] [stdout] 844 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 855 | |                 Quit => return Some(Quit),
[INFO] [stdout] 856 | |             };
[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] running `Command { std: "docker" "inspect" "4df648d8085dc56f02d1b1f9d1f61cc20597116f04ea509783dfbb6ad7f0df8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4df648d8085dc56f02d1b1f9d1f61cc20597116f04ea509783dfbb6ad7f0df8b", kill_on_drop: false }`
[INFO] [stdout] 4df648d8085dc56f02d1b1f9d1f61cc20597116f04ea509783dfbb6ad7f0df8b