[INFO] cloning repository https://github.com/zzeleznick/battery
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zzeleznick/battery" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzzeleznick%2Fbattery", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzzeleznick%2Fbattery'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 157d64cc9917db28f4f617a0dffcb8c59798ff15
[INFO] checking zzeleznick/battery against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzzeleznick%2Fbattery" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zzeleznick/battery 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/zzeleznick/battery
[INFO] finished tweaking git repo https://github.com/zzeleznick/battery
[INFO] tweaked toml for git repo https://github.com/zzeleznick/battery written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/zzeleznick/battery 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e59e7ea47acdb83ab80010858d5d967abfe99543eec290b646fe922f776b25e4
[INFO] running `Command { std: "docker" "start" "-a" "e59e7ea47acdb83ab80010858d5d967abfe99543eec290b646fe922f776b25e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e59e7ea47acdb83ab80010858d5d967abfe99543eec290b646fe922f776b25e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e59e7ea47acdb83ab80010858d5d967abfe99543eec290b646fe922f776b25e4", kill_on_drop: false }`
[INFO] [stdout] e59e7ea47acdb83ab80010858d5d967abfe99543eec290b646fe922f776b25e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] df1a612fe31a9c7a70879bc885ad880645deab11da969b50c0edc945c55e9cba
[INFO] running `Command { std: "docker" "start" "-a" "df1a612fe31a9c7a70879bc885ad880645deab11da969b50c0edc945c55e9cba", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]     Checking regex v1.8.4
[INFO] [stderr]     Checking battery v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `Command { std: "docker" "inspect" "df1a612fe31a9c7a70879bc885ad880645deab11da969b50c0edc945c55e9cba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df1a612fe31a9c7a70879bc885ad880645deab11da969b50c0edc945c55e9cba", kill_on_drop: false }`
[INFO] [stdout] df1a612fe31a9c7a70879bc885ad880645deab11da969b50c0edc945c55e9cba
[INFO] checking zzeleznick/battery against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzzeleznick%2Fbattery" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zzeleznick/battery 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/zzeleznick/battery
[INFO] finished tweaking git repo https://github.com/zzeleznick/battery
[INFO] tweaked toml for git repo https://github.com/zzeleznick/battery written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/zzeleznick/battery 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 900a965da1d7c2c8246478b923ab53052bf99f2c3aed01d7a6da99069eb406e1
[INFO] running `Command { std: "docker" "start" "-a" "900a965da1d7c2c8246478b923ab53052bf99f2c3aed01d7a6da99069eb406e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "900a965da1d7c2c8246478b923ab53052bf99f2c3aed01d7a6da99069eb406e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "900a965da1d7c2c8246478b923ab53052bf99f2c3aed01d7a6da99069eb406e1", kill_on_drop: false }`
[INFO] [stdout] 900a965da1d7c2c8246478b923ab53052bf99f2c3aed01d7a6da99069eb406e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f1fa5d114a44d8a70cb37dcd12d63f2741384818378f4749dc2bc1dd05c2fc72
[INFO] running `Command { std: "docker" "start" "-a" "f1fa5d114a44d8a70cb37dcd12d63f2741384818378f4749dc2bc1dd05c2fc72", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]     Checking regex v1.8.4
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.8.4/src/exec.rs:899:13
[INFO] [stdout]     |
[INFO] [stdout] 899 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 900 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 901 | |                 self.cache.value(),
[INFO] [stdout] 902 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 913 | |                 Quit => return Some(Quit),
[INFO] [stdout] 914 | |             };
[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" "f1fa5d114a44d8a70cb37dcd12d63f2741384818378f4749dc2bc1dd05c2fc72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1fa5d114a44d8a70cb37dcd12d63f2741384818378f4749dc2bc1dd05c2fc72", kill_on_drop: false }`
[INFO] [stdout] f1fa5d114a44d8a70cb37dcd12d63f2741384818378f4749dc2bc1dd05c2fc72