[INFO] cloning repository https://github.com/S-YOU/ferris_watch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/S-YOU/ferris_watch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FS-YOU%2Fferris_watch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FS-YOU%2Fferris_watch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 262e5db36f5d4162f1c202af6c3d39a8aea51359
[INFO] checking S-YOU/ferris_watch against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FS-YOU%2Fferris_watch" "/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/S-YOU/ferris_watch 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/S-YOU/ferris_watch
[INFO] finished tweaking git repo https://github.com/S-YOU/ferris_watch
[INFO] tweaked toml for git repo https://github.com/S-YOU/ferris_watch written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/S-YOU/ferris_watch 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 failure v0.1.3
[INFO] [stderr]   Downloaded failure_derive v0.1.3
[INFO] [stderr]   Downloaded quote v0.6.10
[INFO] [stderr]   Downloaded proc-macro2 v0.4.24
[INFO] [stderr]   Downloaded env_logger v0.6.0
[INFO] [stderr]   Downloaded wincolor v1.0.1
[INFO] [stderr]   Downloaded termcolor v1.0.4
[INFO] [stderr]   Downloaded regex v1.1.0
[INFO] [stderr]   Downloaded humantime v1.2.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.4
[INFO] [stderr]   Downloaded aho-corasick v0.6.9
[INFO] [stderr]   Downloaded memchr v2.1.2
[INFO] [stderr]   Downloaded lazy_static v1.2.0
[INFO] [stderr]   Downloaded utf8-ranges v1.0.2
[INFO] [stderr]   Downloaded winapi-util v0.1.1
[INFO] [stderr]   Downloaded cfg-if v0.1.6
[INFO] [stderr]   Downloaded ncurses v5.97.0
[INFO] [stderr]   Downloaded synstructure v0.10.1
[INFO] [stderr]   Downloaded backtrace v0.3.12
[INFO] [stderr]   Downloaded cc v1.0.26
[INFO] [stderr]   Downloaded syn v0.15.22
[INFO] [stderr]   Downloaded arc-swap v0.3.6
[INFO] [stderr]   Downloaded signal-hook v0.1.6
[INFO] [stderr]   Downloaded pancurses v0.16.0
[INFO] [stderr]   Downloaded pdcurses-sys v0.7.0
[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] b26dfffadb87c9ca688ae83326ccc59d5b49221a50de8fd228c3dce874a42523
[INFO] running `Command { std: "docker" "start" "-a" "b26dfffadb87c9ca688ae83326ccc59d5b49221a50de8fd228c3dce874a42523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b26dfffadb87c9ca688ae83326ccc59d5b49221a50de8fd228c3dce874a42523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b26dfffadb87c9ca688ae83326ccc59d5b49221a50de8fd228c3dce874a42523", kill_on_drop: false }`
[INFO] [stdout] b26dfffadb87c9ca688ae83326ccc59d5b49221a50de8fd228c3dce874a42523
[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] 8994e1c7b626f119781b6f61a7f98cfda7a7c435a01fb65116fedab6878f5745
[INFO] running `Command { std: "docker" "start" "-a" "8994e1c7b626f119781b6f61a7f98cfda7a7c435a01fb65116fedab6878f5745", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking arc-swap v0.3.6
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling ncurses v5.97.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking signal-hook v0.1.6
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking pancurses v0.16.0
[INFO] [stderr]     Checking backtrace v0.3.12
[INFO] [stderr]     Checking env_logger v0.6.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking ferris_watch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "8994e1c7b626f119781b6f61a7f98cfda7a7c435a01fb65116fedab6878f5745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8994e1c7b626f119781b6f61a7f98cfda7a7c435a01fb65116fedab6878f5745", kill_on_drop: false }`
[INFO] [stdout] 8994e1c7b626f119781b6f61a7f98cfda7a7c435a01fb65116fedab6878f5745
[INFO] checking S-YOU/ferris_watch against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FS-YOU%2Fferris_watch" "/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/S-YOU/ferris_watch 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/S-YOU/ferris_watch
[INFO] finished tweaking git repo https://github.com/S-YOU/ferris_watch
[INFO] tweaked toml for git repo https://github.com/S-YOU/ferris_watch written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/S-YOU/ferris_watch 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] 56773188841a27a1947db81461cd5dca57da035c8d9557633f92ce2b3c916657
[INFO] running `Command { std: "docker" "start" "-a" "56773188841a27a1947db81461cd5dca57da035c8d9557633f92ce2b3c916657", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56773188841a27a1947db81461cd5dca57da035c8d9557633f92ce2b3c916657", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56773188841a27a1947db81461cd5dca57da035c8d9557633f92ce2b3c916657", kill_on_drop: false }`
[INFO] [stdout] 56773188841a27a1947db81461cd5dca57da035c8d9557633f92ce2b3c916657
[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] 6eec87492f5f318f03bbacd4ceda6049063abc6a3364d2bd8c0b3c2b4354410d
[INFO] running `Command { std: "docker" "start" "-a" "6eec87492f5f318f03bbacd4ceda6049063abc6a3364d2bd8c0b3c2b4354410d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking arc-swap v0.3.6
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling ncurses v5.97.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking signal-hook v0.1.6
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking pancurses v0.16.0
[INFO] [stderr]     Checking backtrace v0.3.12
[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" "6eec87492f5f318f03bbacd4ceda6049063abc6a3364d2bd8c0b3c2b4354410d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eec87492f5f318f03bbacd4ceda6049063abc6a3364d2bd8c0b3c2b4354410d", kill_on_drop: false }`
[INFO] [stdout] 6eec87492f5f318f03bbacd4ceda6049063abc6a3364d2bd8c0b3c2b4354410d