[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#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishaltelangre%2Fff" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/vishaltelangre/ff on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-7-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded globset v0.4.2 [INFO] [stderr] Downloaded ignore v0.4.6 [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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1e4c9cf980e65a0871a460d7e504f05714a004cf1263cec4de1d2f8cf8cead3f [INFO] running `Command { std: "docker" "start" "-a" "1e4c9cf980e65a0871a460d7e504f05714a004cf1263cec4de1d2f8cf8cead3f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1e4c9cf980e65a0871a460d7e504f05714a004cf1263cec4de1d2f8cf8cead3f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1e4c9cf980e65a0871a460d7e504f05714a004cf1263cec4de1d2f8cf8cead3f", kill_on_drop: false }` [INFO] [stdout] 1e4c9cf980e65a0871a460d7e504f05714a004cf1263cec4de1d2f8cf8cead3f [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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5a2fc08196153e3461630a077e7da3bfc3824ac6e9f7c2f14ac7325830a6edcc [INFO] running `Command { std: "docker" "start" "-a" "5a2fc08196153e3461630a077e7da3bfc3824ac6e9f7c2f14ac7325830a6edcc", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Compiling libc v0.2.48 [INFO] [stderr] Checking regex-syntax v0.6.5 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking smallvec v0.6.9 [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 regex v1.1.0 [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 7.08s [INFO] running `Command { std: "docker" "inspect" "5a2fc08196153e3461630a077e7da3bfc3824ac6e9f7c2f14ac7325830a6edcc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5a2fc08196153e3461630a077e7da3bfc3824ac6e9f7c2f14ac7325830a6edcc", kill_on_drop: false }` [INFO] [stdout] 5a2fc08196153e3461630a077e7da3bfc3824ac6e9f7c2f14ac7325830a6edcc [INFO] checking vishaltelangre/ff against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvishaltelangre%2Fff" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/vishaltelangre/ff on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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-7-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] edffbae6d8296376a9bde54a8dfa40bab94b2bbaeb7a521ebeef74b94a254be2 [INFO] running `Command { std: "docker" "start" "-a" "edffbae6d8296376a9bde54a8dfa40bab94b2bbaeb7a521ebeef74b94a254be2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "edffbae6d8296376a9bde54a8dfa40bab94b2bbaeb7a521ebeef74b94a254be2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "edffbae6d8296376a9bde54a8dfa40bab94b2bbaeb7a521ebeef74b94a254be2", kill_on_drop: false }` [INFO] [stdout] edffbae6d8296376a9bde54a8dfa40bab94b2bbaeb7a521ebeef74b94a254be2 [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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] beeeae4b078f89042509beeb49aa7b959a3c340b5a68f787b22329fc6a32a781 [INFO] running `Command { std: "docker" "start" "-a" "beeeae4b078f89042509beeb49aa7b959a3c340b5a68f787b22329fc6a32a781", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.2.0 [INFO] [stderr] Compiling libc v0.2.48 [INFO] [stderr] Checking regex-syntax v0.6.5 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking crossbeam-utils v0.6.5 [INFO] [stderr] Checking smallvec v0.6.9 [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 regex v1.1.0 [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: 3 warnings emitted [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] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.38s [INFO] running `Command { std: "docker" "inspect" "beeeae4b078f89042509beeb49aa7b959a3c340b5a68f787b22329fc6a32a781", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "beeeae4b078f89042509beeb49aa7b959a3c340b5a68f787b22329fc6a32a781", kill_on_drop: false }` [INFO] [stdout] beeeae4b078f89042509beeb49aa7b959a3c340b5a68f787b22329fc6a32a781