[INFO] cloning repository https://github.com/gahag/bgrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gahag/bgrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgahag%2Fbgrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgahag%2Fbgrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 921f84d6aa7d5daabe0d95a24ba912cfac8cdb5a
[INFO] checking gahag/bgrep against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgahag%2Fbgrep" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gahag/bgrep 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/gahag/bgrep
[INFO] finished tweaking git repo https://github.com/gahag/bgrep
[INFO] tweaked toml for git repo https://github.com/gahag/bgrep written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gahag/bgrep 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 utf8-ranges v1.0.2
[INFO] [stderr]   Downloaded lazy_static v1.2.0
[INFO] [stderr]   Downloaded ucd-util v0.1.3
[INFO] [stderr]   Downloaded memchr v2.1.3
[INFO] [stderr]   Downloaded thread_local v0.3.6
[INFO] [stderr]   Downloaded cfg-if v0.1.6
[INFO] [stderr]   Downloaded atty v0.2.11
[INFO] [stderr]   Downloaded strsim v0.7.0
[INFO] [stderr]   Downloaded redox_termios v0.1.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.51
[INFO] [stderr]   Downloaded ansi_term v0.11.0
[INFO] [stderr]   Downloaded aho-corasick v0.6.9
[INFO] [stderr]   Downloaded termion v1.5.1
[INFO] [stderr]   Downloaded regex v1.1.0
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded clap v2.32.0
[INFO] [stderr]   Downloaded libc v0.2.48
[INFO] [stderr]   Downloaded regex-syntax v0.6.5
[INFO] [stderr]   Downloaded winapi v0.3.6
[INFO] [stderr]   Downloaded unicode-width v0.1.5
[INFO] [stderr]   Downloaded textwrap v0.10.0
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded winapi-i686-pc-windows-gnu v0.4.0
[INFO] [stderr]   Downloaded winapi-x86_64-pc-windows-gnu v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 501c7a35bbf34d09d0e757e02151513defcf284eccc1d62d4756bb8bc9b9b374
[INFO] running `Command { std: "docker" "start" "-a" "501c7a35bbf34d09d0e757e02151513defcf284eccc1d62d4756bb8bc9b9b374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "501c7a35bbf34d09d0e757e02151513defcf284eccc1d62d4756bb8bc9b9b374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "501c7a35bbf34d09d0e757e02151513defcf284eccc1d62d4756bb8bc9b9b374", kill_on_drop: false }`
[INFO] [stdout] 501c7a35bbf34d09d0e757e02151513defcf284eccc1d62d4756bb8bc9b9b374
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f1e7e58f5d394475b32fb35695e2ee52038e3e232cb0c6b1561380356f58c061
[INFO] running `Command { std: "docker" "start" "-a" "f1e7e58f5d394475b32fb35695e2ee52038e3e232cb0c6b1561380356f58c061", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking bgrep v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `clap` is imported redundantly
[INFO] [stdout]  --> src/args.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use clap::{self, App, Arg, ArgMatches};
[INFO] [stdout]   |            ^^^^ the item `clap` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `clap` is imported redundantly
[INFO] [stdout]  --> src/args.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use clap::{self, App, Arg, ArgMatches};
[INFO] [stdout]   |            ^^^^ the item `clap` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `Command { std: "docker" "inspect" "f1e7e58f5d394475b32fb35695e2ee52038e3e232cb0c6b1561380356f58c061", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1e7e58f5d394475b32fb35695e2ee52038e3e232cb0c6b1561380356f58c061", kill_on_drop: false }`
[INFO] [stdout] f1e7e58f5d394475b32fb35695e2ee52038e3e232cb0c6b1561380356f58c061
[INFO] checking gahag/bgrep against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgahag%2Fbgrep" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gahag/bgrep 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/gahag/bgrep
[INFO] finished tweaking git repo https://github.com/gahag/bgrep
[INFO] tweaked toml for git repo https://github.com/gahag/bgrep written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/gahag/bgrep 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f8495991a37be1edd6b74c58a7b35d658005473928ce5c528e06141ecc355539
[INFO] running `Command { std: "docker" "start" "-a" "f8495991a37be1edd6b74c58a7b35d658005473928ce5c528e06141ecc355539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8495991a37be1edd6b74c58a7b35d658005473928ce5c528e06141ecc355539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8495991a37be1edd6b74c58a7b35d658005473928ce5c528e06141ecc355539", kill_on_drop: false }`
[INFO] [stdout] f8495991a37be1edd6b74c58a7b35d658005473928ce5c528e06141ecc355539
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] dd4caf4ff2f862a881b22a95e17d65e83c2ceac8d2d3ec3f50aca14c0be305bb
[INFO] running `Command { std: "docker" "start" "-a" "dd4caf4ff2f862a881b22a95e17d65e83c2ceac8d2d3ec3f50aca14c0be305bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.1.0/src/exec.rs:754:13
[INFO] [stdout]     |
[INFO] [stdout] 754 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 755 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 756 | |                 self.cache,
[INFO] [stdout] 757 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 764 | |                 Quit => return Some(Quit),
[INFO] [stdout] 765 | |             };
[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" "dd4caf4ff2f862a881b22a95e17d65e83c2ceac8d2d3ec3f50aca14c0be305bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd4caf4ff2f862a881b22a95e17d65e83c2ceac8d2d3ec3f50aca14c0be305bb", kill_on_drop: false }`
[INFO] [stdout] dd4caf4ff2f862a881b22a95e17d65e83c2ceac8d2d3ec3f50aca14c0be305bb