[INFO] fetching crate wfh 0.1.0... [INFO] checking wfh-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate wfh 0.1.0 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate wfh 0.1.0 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 crates.io crate wfh 0.1.0 [INFO] finished tweaking crates.io crate wfh 0.1.0 [INFO] tweaked toml for crates.io crate wfh 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate crates.io crate wfh 0.1.0 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 structopt-derive v0.4.0 [INFO] [stderr] Downloaded rustversion v1.0.1 [INFO] [stderr] Downloaded proc-macro-error v0.4.4 [INFO] [stderr] Downloaded proc-macro-error-attr v0.4.3 [INFO] [stderr] Downloaded inotify v0.7.0 [INFO] [stderr] Downloaded syn-mid v0.4.0 [INFO] [stderr] Downloaded structopt v0.3.7 [INFO] [stderr] Downloaded globset v0.4.4 [INFO] [stderr] Downloaded ignore v0.4.11 [INFO] [stderr] Downloaded notify v4.0.15 [INFO] [stderr] Downloaded nix v0.16.1 [INFO] [stderr] Downloaded bstr v0.2.10 [INFO] [stderr] Downloaded regex-syntax v0.6.13 [INFO] [stderr] Downloaded regex v1.3.3 [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] 6cd1d77be5a46114a2fb7d5360ff7e05b83a13b4a408ca6d5200c00a5a7941e9 [INFO] running `Command { std: "docker" "start" "-a" "6cd1d77be5a46114a2fb7d5360ff7e05b83a13b4a408ca6d5200c00a5a7941e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6cd1d77be5a46114a2fb7d5360ff7e05b83a13b4a408ca6d5200c00a5a7941e9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6cd1d77be5a46114a2fb7d5360ff7e05b83a13b4a408ca6d5200c00a5a7941e9", kill_on_drop: false }` [INFO] [stdout] 6cd1d77be5a46114a2fb7d5360ff7e05b83a13b4a408ca6d5200c00a5a7941e9 [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] 5387fa164a6c003589f6082456c79188baf8d7b665d8989bbbcc5afa7e321198 [INFO] running `Command { std: "docker" "start" "-a" "5387fa164a6c003589f6082456c79188baf8d7b665d8989bbbcc5afa7e321198", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling proc-macro2 v1.0.8 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.13 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling memchr v2.3.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Checking regex-syntax v0.6.13 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking unicode-width v0.1.7 [INFO] [stderr] Compiling unicode-segmentation v1.6.0 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking walkdir v2.3.1 [INFO] [stderr] Compiling nix v0.16.1 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking lazycell v1.2.1 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking termcolor v1.1.0 [INFO] [stderr] Checking remove_dir_all v0.5.2 [INFO] [stderr] Compiling crossbeam-utils v0.7.0 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking aho-corasick v0.7.6 [INFO] [stderr] Checking bstr v0.2.10 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking crossbeam-channel v0.4.0 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking inotify-sys v0.1.3 [INFO] [stderr] Checking filetime v0.2.8 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking inotify v0.7.0 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking mio v0.6.21 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking regex v1.3.3 [INFO] [stderr] Checking mio-extras v2.0.6 [INFO] [stderr] Checking notify v4.0.15 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Checking globset v0.4.4 [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stderr] Checking ignore v0.4.11 [INFO] [stderr] Compiling syn-mid v0.4.0 [INFO] [stderr] Compiling rustversion v1.0.1 [INFO] [stderr] Compiling proc-macro-error v0.4.4 [INFO] [stderr] Compiling proc-macro-error-attr v0.4.3 [INFO] [stderr] Compiling structopt-derive v0.4.0 [INFO] [stderr] Checking structopt v0.3.7 [INFO] [stderr] Checking wfh v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:7:1 [INFO] [stdout] | [INFO] [stdout] 7 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:7:1 [INFO] [stdout] | [INFO] [stdout] 7 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/app.rs:137:9 [INFO] [stdout] | [INFO] [stdout] 119 | / loop { [INFO] [stdout] 120 | | match rx.recv_timeout(Duration::from_millis(1000)) { [INFO] [stdout] 121 | | Ok(event) => { [INFO] [stdout] 122 | | self.find_dir_to_sync(&event) [INFO] [stdout] ... | [INFO] [stdout] 135 | | } [INFO] [stdout] 136 | | } [INFO] [stdout] | |_________- any code following this expression is unreachable [INFO] [stdout] 137 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/app.rs:137:9 [INFO] [stdout] | [INFO] [stdout] 119 | / loop { [INFO] [stdout] 120 | | match rx.recv_timeout(Duration::from_millis(1000)) { [INFO] [stdout] 121 | | Ok(event) => { [INFO] [stdout] 122 | | self.find_dir_to_sync(&event) [INFO] [stdout] ... | [INFO] [stdout] 135 | | } [INFO] [stdout] 136 | | } [INFO] [stdout] | |_________- any code following this expression is unreachable [INFO] [stdout] 137 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `reset_pbar` is never used [INFO] [stdout] --> src/pbar.rs:19:8 [INFO] [stdout] | [INFO] [stdout] 19 | pub fn reset_pbar(n: usize) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `reset_pbar` is never used [INFO] [stdout] --> src/pbar.rs:19:8 [INFO] [stdout] | [INFO] [stdout] 19 | pub fn reset_pbar(n: usize) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `print_pbar` is never used [INFO] [stdout] --> src/pbar.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | pub fn print_pbar(dirs: &Vec, s: &str) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `print_pbar` is never used [INFO] [stdout] --> src/pbar.rs:25:8 [INFO] [stdout] | [INFO] [stdout] 25 | pub fn print_pbar(dirs: &Vec, s: &str) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.47s [INFO] running `Command { std: "docker" "inspect" "5387fa164a6c003589f6082456c79188baf8d7b665d8989bbbcc5afa7e321198", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5387fa164a6c003589f6082456c79188baf8d7b665d8989bbbcc5afa7e321198", kill_on_drop: false }` [INFO] [stdout] 5387fa164a6c003589f6082456c79188baf8d7b665d8989bbbcc5afa7e321198 [INFO] checking wfh-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate wfh 0.1.0 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate wfh 0.1.0 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 crates.io crate wfh 0.1.0 [INFO] finished tweaking crates.io crate wfh 0.1.0 [INFO] tweaked toml for crates.io crate wfh 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate crates.io crate wfh 0.1.0 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] 02ca87c50236302898c843e8c6005f4df926ef071011572fc744d40f97c9eace [INFO] running `Command { std: "docker" "start" "-a" "02ca87c50236302898c843e8c6005f4df926ef071011572fc744d40f97c9eace", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "02ca87c50236302898c843e8c6005f4df926ef071011572fc744d40f97c9eace", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "02ca87c50236302898c843e8c6005f4df926ef071011572fc744d40f97c9eace", kill_on_drop: false }` [INFO] [stdout] 02ca87c50236302898c843e8c6005f4df926ef071011572fc744d40f97c9eace [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] b3de5c4528dae6b1e9d86f1a539ddff63aaa0a85c97da754f4c4a8e8e19c6f2e [INFO] running `Command { std: "docker" "start" "-a" "b3de5c4528dae6b1e9d86f1a539ddff63aaa0a85c97da754f4c4a8e8e19c6f2e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling proc-macro2 v1.0.8 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.13 [INFO] [stderr] Compiling memchr v2.3.0 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Checking regex-syntax v0.6.13 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling unicode-segmentation v1.6.0 [INFO] [stderr] Checking unicode-width v0.1.7 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking walkdir v2.3.1 [INFO] [stderr] Checking lazycell v1.2.1 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Compiling nix v0.16.1 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking termcolor v1.1.0 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking remove_dir_all v0.5.2 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Compiling crossbeam-utils v0.7.0 [INFO] [stderr] Checking aho-corasick v0.7.6 [INFO] [stderr] Checking bstr v0.2.10 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking crossbeam-channel v0.4.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking inotify-sys v0.1.3 [INFO] [stderr] Checking filetime v0.2.8 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking inotify v0.7.0 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking mio v0.6.21 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking regex v1.3.3 [INFO] [stderr] Checking mio-extras v2.0.6 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.3.3/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] [stderr] Checking notify v4.0.15 [INFO] [stderr] Checking tempfile v3.1.0 [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" "b3de5c4528dae6b1e9d86f1a539ddff63aaa0a85c97da754f4c4a8e8e19c6f2e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b3de5c4528dae6b1e9d86f1a539ddff63aaa0a85c97da754f4c4a8e8e19c6f2e", kill_on_drop: false }` [INFO] [stdout] b3de5c4528dae6b1e9d86f1a539ddff63aaa0a85c97da754f4c4a8e8e19c6f2e