[INFO] cloning repository https://github.com/vishaltelangre/ff [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vishaltelangre/ff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishaltelangre%2Fff", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishaltelangre%2Fff'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7084353a24ad7938cbc0428e4a75eb433f648aaf [INFO] checking vishaltelangre/ff against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishaltelangre%2Fff" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/vishaltelangre/ff 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/vishaltelangre/ff [INFO] finished tweaking git repo https://github.com/vishaltelangre/ff [INFO] tweaked toml for git repo https://github.com/vishaltelangre/ff written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/vishaltelangre/ff 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 walkdir v2.2.7 [INFO] [stderr] Downloaded same-file v1.0.4 [INFO] [stderr] Downloaded winapi-util v0.1.2 [INFO] [stderr] Downloaded utf8-ranges v1.0.2 [INFO] [stderr] Downloaded lazy_static v1.2.0 [INFO] [stderr] Downloaded thread_local v0.3.6 [INFO] [stderr] Downloaded cfg-if v0.1.6 [INFO] [stderr] Downloaded log v0.4.6 [INFO] [stderr] Downloaded num_cpus v1.10.0 [INFO] [stderr] Downloaded textwrap v0.10.0 [INFO] [stderr] Downloaded smallvec v0.6.9 [INFO] [stderr] Downloaded redox_syscall v0.1.51 [INFO] [stderr] Downloaded ignore v0.4.6 [INFO] [stderr] Downloaded strsim v0.7.0 [INFO] [stderr] Downloaded crossbeam-channel v0.3.8 [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 regex v1.1.0 [INFO] [stderr] Downloaded crossbeam-utils v0.6.5 [INFO] [stderr] Downloaded winapi v0.3.6 [INFO] [stderr] Downloaded globset v0.4.2 [INFO] [stderr] Downloaded aho-corasick v0.6.10 [INFO] [stderr] Downloaded ucd-util v0.1.3 [INFO] [stderr] Downloaded fnv v1.0.6 [INFO] [stderr] Downloaded memchr v2.2.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 97a6f7dfefe0895b2818eaa73dffaa37c654ab823d1305e169976ba4b87738d1 [INFO] running `Command { std: "docker" "start" "-a" "97a6f7dfefe0895b2818eaa73dffaa37c654ab823d1305e169976ba4b87738d1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "97a6f7dfefe0895b2818eaa73dffaa37c654ab823d1305e169976ba4b87738d1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "97a6f7dfefe0895b2818eaa73dffaa37c654ab823d1305e169976ba4b87738d1", kill_on_drop: false }` [INFO] [stdout] 97a6f7dfefe0895b2818eaa73dffaa37c654ab823d1305e169976ba4b87738d1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 4e58419f17300697177fbc3a19fc211cff2c816fe597a1c6b7c3950db131bf7e [INFO] running `Command { std: "docker" "start" "-a" "4e58419f17300697177fbc3a19fc211cff2c816fe597a1c6b7c3950db131bf7e", kill_on_drop: false }` [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Compiling libc v0.2.48 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Compiling regex v1.1.0 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Checking same-file v1.0.4 [INFO] [stderr] Checking smallvec v0.6.9 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking strsim v0.7.0 [INFO] [stderr] Checking textwrap v0.10.0 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking regex-syntax v0.6.5 [INFO] [stderr] Checking walkdir v2.2.7 [INFO] [stderr] Checking crossbeam-channel v0.3.8 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking num_cpus v1.10.0 [INFO] [stderr] Checking clap v2.32.0 [INFO] [stderr] Checking globset v0.4.2 [INFO] [stderr] Checking ignore v0.4.6 [INFO] [stderr] Checking find-files v0.1.8 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `clap` is imported redundantly [INFO] [stdout] --> src/args.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use clap; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate clap; [INFO] [stdout] | ------------------ the item `clap` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `num_cpus` is imported redundantly [INFO] [stdout] --> src/args.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use num_cpus; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | extern crate num_cpus; [INFO] [stdout] | ---------------------- the item `num_cpus` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `clap` is imported redundantly [INFO] [stdout] --> src/args.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use clap; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate clap; [INFO] [stdout] | ------------------ the item `clap` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `num_cpus` is imported redundantly [INFO] [stdout] --> src/args.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use num_cpus; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | extern crate num_cpus; [INFO] [stdout] | ---------------------- the item `num_cpus` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `case_sensitive` is never read [INFO] [stdout] --> src/args.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct Args { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] ... [INFO] [stdout] 18 | pub case_sensitive: bool, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `case_sensitive` is never read [INFO] [stdout] --> src/args.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct Args { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] ... [INFO] [stdout] 18 | pub case_sensitive: bool, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.98s [INFO] running `Command { std: "docker" "inspect" "4e58419f17300697177fbc3a19fc211cff2c816fe597a1c6b7c3950db131bf7e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4e58419f17300697177fbc3a19fc211cff2c816fe597a1c6b7c3950db131bf7e", kill_on_drop: false }` [INFO] [stdout] 4e58419f17300697177fbc3a19fc211cff2c816fe597a1c6b7c3950db131bf7e [INFO] checking vishaltelangre/ff against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishaltelangre%2Fff" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/vishaltelangre/ff 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/vishaltelangre/ff [INFO] finished tweaking git repo https://github.com/vishaltelangre/ff [INFO] tweaked toml for git repo https://github.com/vishaltelangre/ff written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/vishaltelangre/ff 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] af470036eea1c7d3c6f786ee51284db79e5841b265d6b28614a6bce1bd37d72f [INFO] running `Command { std: "docker" "start" "-a" "af470036eea1c7d3c6f786ee51284db79e5841b265d6b28614a6bce1bd37d72f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "af470036eea1c7d3c6f786ee51284db79e5841b265d6b28614a6bce1bd37d72f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "af470036eea1c7d3c6f786ee51284db79e5841b265d6b28614a6bce1bd37d72f", kill_on_drop: false }` [INFO] [stdout] af470036eea1c7d3c6f786ee51284db79e5841b265d6b28614a6bce1bd37d72f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 85119b9261f5cdd14d32d2d81cbcf26686c103e51ad34912380b620dd47df977 [INFO] running `Command { std: "docker" "start" "-a" "85119b9261f5cdd14d32d2d81cbcf26686c103e51ad34912380b620dd47df977", kill_on_drop: false }` [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Compiling libc v0.2.48 [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 utf8-ranges v1.0.2 [INFO] [stderr] Checking smallvec v0.6.9 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking same-file v1.0.4 [INFO] [stderr] Checking strsim v0.7.0 [INFO] [stderr] Checking textwrap v0.10.0 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking regex-syntax v0.6.5 [INFO] [stderr] Checking walkdir v2.2.7 [INFO] [stderr] Checking crossbeam-channel v0.3.8 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking num_cpus v1.10.0 [INFO] [stderr] Checking clap v2.32.0 [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] running `Command { std: "docker" "inspect" "85119b9261f5cdd14d32d2d81cbcf26686c103e51ad34912380b620dd47df977", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "85119b9261f5cdd14d32d2d81cbcf26686c103e51ad34912380b620dd47df977", kill_on_drop: false }` [INFO] [stdout] 85119b9261f5cdd14d32d2d81cbcf26686c103e51ad34912380b620dd47df977