[INFO] fetching crate system76-oled 0.1.4...
[INFO] checking system76-oled-0.1.4 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate system76-oled 0.1.4 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate system76-oled 0.1.4 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] removed /workspace/builds/worker-0-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate system76-oled 0.1.4
[INFO] finished tweaking crates.io crate system76-oled 0.1.4
[INFO] tweaked toml for crates.io crate system76-oled 0.1.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate system76-oled 0.1.4 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]  Downloading crates ...
[INFO] [stderr]   Downloaded hermit-abi v0.1.12
[INFO] [stderr]   Downloaded libdbus-sys v0.2.1
[INFO] [stderr]   Downloaded inotify v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4359890387f86d828d4acbfa8df85e9475a32b4fec751912d8a201fec62bb4b9
[INFO] running `Command { std: "docker" "start" "-a" "4359890387f86d828d4acbfa8df85e9475a32b4fec751912d8a201fec62bb4b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4359890387f86d828d4acbfa8df85e9475a32b4fec751912d8a201fec62bb4b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4359890387f86d828d4acbfa8df85e9475a32b4fec751912d8a201fec62bb4b9", kill_on_drop: false }`
[INFO] [stdout] 4359890387f86d828d4acbfa8df85e9475a32b4fec751912d8a201fec62bb4b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 030915f1a7da876d2373cc4a5ee17b647f51330c820526dad2a2f8faad5b3940
[INFO] running `Command { std: "docker" "start" "-a" "030915f1a7da876d2373cc4a5ee17b647f51330c820526dad2a2f8faad5b3940", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling libdbus-sys v0.2.1
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking dbus v0.6.5
[INFO] [stderr]     Checking inotify v0.7.0
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking system76-oled v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `Command { std: "docker" "inspect" "030915f1a7da876d2373cc4a5ee17b647f51330c820526dad2a2f8faad5b3940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "030915f1a7da876d2373cc4a5ee17b647f51330c820526dad2a2f8faad5b3940", kill_on_drop: false }`
[INFO] [stdout] 030915f1a7da876d2373cc4a5ee17b647f51330c820526dad2a2f8faad5b3940
[INFO] checking system76-oled-0.1.4 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate system76-oled 0.1.4 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate system76-oled 0.1.4 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] removed /workspace/builds/worker-0-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate system76-oled 0.1.4
[INFO] finished tweaking crates.io crate system76-oled 0.1.4
[INFO] tweaked toml for crates.io crate system76-oled 0.1.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate system76-oled 0.1.4 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e90468cbf48bc6bff0e3c721f0c4a1a0f7878f508d78a7f4b5db32a61d8f3ea2
[INFO] running `Command { std: "docker" "start" "-a" "e90468cbf48bc6bff0e3c721f0c4a1a0f7878f508d78a7f4b5db32a61d8f3ea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e90468cbf48bc6bff0e3c721f0c4a1a0f7878f508d78a7f4b5db32a61d8f3ea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e90468cbf48bc6bff0e3c721f0c4a1a0f7878f508d78a7f4b5db32a61d8f3ea2", kill_on_drop: false }`
[INFO] [stdout] e90468cbf48bc6bff0e3c721f0c4a1a0f7878f508d78a7f4b5db32a61d8f3ea2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 89ee79c8fbac02129c846c58ccc43b99bae6a50a19c9da67b2a853e07dabf551
[INFO] running `Command { std: "docker" "start" "-a" "89ee79c8fbac02129c846c58ccc43b99bae6a50a19c9da67b2a853e07dabf551", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling libdbus-sys v0.2.1
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking dbus v0.6.5
[INFO] [stderr]     Checking inotify v0.7.0
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.3.7/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] [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" "89ee79c8fbac02129c846c58ccc43b99bae6a50a19c9da67b2a853e07dabf551", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89ee79c8fbac02129c846c58ccc43b99bae6a50a19c9da67b2a853e07dabf551", kill_on_drop: false }`
[INFO] [stdout] 89ee79c8fbac02129c846c58ccc43b99bae6a50a19c9da67b2a853e07dabf551