[INFO] cloning repository https://github.com/hobofan/rsdocs-dashing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hobofan/rsdocs-dashing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhobofan%2Frsdocs-dashing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhobofan%2Frsdocs-dashing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 52045b387264d803ce93ee6853e79ebf5c0c2d2b
[INFO] checking hobofan/rsdocs-dashing against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhobofan%2Frsdocs-dashing" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hobofan/rsdocs-dashing 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/hobofan/rsdocs-dashing
[INFO] finished tweaking git repo https://github.com/hobofan/rsdocs-dashing
[INFO] tweaked toml for git repo https://github.com/hobofan/rsdocs-dashing written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hobofan/rsdocs-dashing 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 docopt v0.8.1
[INFO] [stderr]   Downloaded copy_dir v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] d83b3ee09b0240966a608aa90468191a17f7736b5260a736e5ff0dfb9d23c1fc
[INFO] running `Command { std: "docker" "start" "-a" "d83b3ee09b0240966a608aa90468191a17f7736b5260a736e5ff0dfb9d23c1fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d83b3ee09b0240966a608aa90468191a17f7736b5260a736e5ff0dfb9d23c1fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d83b3ee09b0240966a608aa90468191a17f7736b5260a736e5ff0dfb9d23c1fc", kill_on_drop: false }`
[INFO] [stdout] d83b3ee09b0240966a608aa90468191a17f7736b5260a736e5ff0dfb9d23c1fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] e6dccbae121697fe3e514aad87d3626f0fcc2518c4690ef709a7a38f08635baf
[INFO] running `Command { std: "docker" "start" "-a" "e6dccbae121697fe3e514aad87d3626f0fcc2518c4690ef709a7a38f08635baf", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking libc v0.2.29
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.4.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking serde v1.0.11
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking dtoa v0.4.1
[INFO] [stderr]     Checking itoa v0.3.1
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking walkdir v0.1.8
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking copy_dir v0.1.2
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]    Compiling serde_derive v1.0.11
[INFO] [stderr]     Checking serde_json v1.0.2
[INFO] [stderr]     Checking docopt v0.8.1
[INFO] [stderr]     Checking rsdocs-dashing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/main.rs:61:49
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let filename = path.file_name().unwrap().clone();
[INFO] [stdout]    |                                                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `OsStr` does not implement `Clone`, so calling `clone` on `&OsStr` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 61 -         let filename = path.file_name().unwrap().clone();
[INFO] [stdout] 61 +         let filename = path.file_name().unwrap();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/main.rs:61:49
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let filename = path.file_name().unwrap().clone();
[INFO] [stdout]    |                                                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `OsStr` does not implement `Clone`, so calling `clone` on `&OsStr` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 61 -         let filename = path.file_name().unwrap().clone();
[INFO] [stdout] 61 +         let filename = path.file_name().unwrap();
[INFO] [stdout]    |
[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 2.11s
[INFO] running `Command { std: "docker" "inspect" "e6dccbae121697fe3e514aad87d3626f0fcc2518c4690ef709a7a38f08635baf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6dccbae121697fe3e514aad87d3626f0fcc2518c4690ef709a7a38f08635baf", kill_on_drop: false }`
[INFO] [stdout] e6dccbae121697fe3e514aad87d3626f0fcc2518c4690ef709a7a38f08635baf
[INFO] checking hobofan/rsdocs-dashing against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhobofan%2Frsdocs-dashing" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hobofan/rsdocs-dashing 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/hobofan/rsdocs-dashing
[INFO] finished tweaking git repo https://github.com/hobofan/rsdocs-dashing
[INFO] tweaked toml for git repo https://github.com/hobofan/rsdocs-dashing written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/hobofan/rsdocs-dashing 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 13e37f01565591674c282a5786c041d62d81d448ef8e0315f48d45089ad33a42
[INFO] running `Command { std: "docker" "start" "-a" "13e37f01565591674c282a5786c041d62d81d448ef8e0315f48d45089ad33a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13e37f01565591674c282a5786c041d62d81d448ef8e0315f48d45089ad33a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13e37f01565591674c282a5786c041d62d81d448ef8e0315f48d45089ad33a42", kill_on_drop: false }`
[INFO] [stdout] 13e37f01565591674c282a5786c041d62d81d448ef8e0315f48d45089ad33a42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8893eebb5a038866bd3c0083df6fab2499ba4c7c540989bdeaf15f81744f767e
[INFO] running `Command { std: "docker" "start" "-a" "8893eebb5a038866bd3c0083df6fab2499ba4c7c540989bdeaf15f81744f767e", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking libc v0.2.29
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking regex-syntax v0.4.1
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking serde v1.0.11
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking itoa v0.3.1
[INFO] [stderr]     Checking dtoa v0.4.1
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking walkdir v0.1.8
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking copy_dir v0.1.2
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-0.2.2/src/exec.rs:738:13
[INFO] [stdout]     |
[INFO] [stdout] 738 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 739 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 740 | |                 &self.cache,
[INFO] [stdout] 741 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 748 | |                 Quit => return Some(Quit),
[INFO] [stdout] 749 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[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" "8893eebb5a038866bd3c0083df6fab2499ba4c7c540989bdeaf15f81744f767e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8893eebb5a038866bd3c0083df6fab2499ba4c7c540989bdeaf15f81744f767e", kill_on_drop: false }`
[INFO] [stdout] 8893eebb5a038866bd3c0083df6fab2499ba4c7c540989bdeaf15f81744f767e