[INFO] fetching crate frac 2.1.0...
[INFO] checking frac-2.1.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate frac 2.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate frac 2.1.0 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate frac 2.1.0
[INFO] finished tweaking crates.io crate frac 2.1.0
[INFO] tweaked toml for crates.io crate frac 2.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b719ae1dcea5cb5541ed230c43b5571efdb086395b781d1853388392ae6bc03
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2b719ae1dcea5cb5541ed230c43b5571efdb086395b781d1853388392ae6bc03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b719ae1dcea5cb5541ed230c43b5571efdb086395b781d1853388392ae6bc03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b719ae1dcea5cb5541ed230c43b5571efdb086395b781d1853388392ae6bc03", kill_on_drop: false }`
[INFO] [stdout] 2b719ae1dcea5cb5541ed230c43b5571efdb086395b781d1853388392ae6bc03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 84ba285332a49903c6c25aef0147ba9043fbbd6be90b83f24f5be9def11191a6
[INFO] running `Command { std: "docker" "start" "-a" "84ba285332a49903c6c25aef0147ba9043fbbd6be90b83f24f5be9def11191a6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking frac v2.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `zer_zer_xxxx`
[INFO] [stdout]   --> src/tests/div.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn zer_zer_xxxx() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pos_zer_xxxx`
[INFO] [stdout]   --> src/tests/div.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn pos_zer_xxxx() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `neg_zer_xxxx`
[INFO] [stdout]   --> src/tests/div.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn neg_zer_xxxx() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "84ba285332a49903c6c25aef0147ba9043fbbd6be90b83f24f5be9def11191a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84ba285332a49903c6c25aef0147ba9043fbbd6be90b83f24f5be9def11191a6", kill_on_drop: false }`
[INFO] [stdout] 84ba285332a49903c6c25aef0147ba9043fbbd6be90b83f24f5be9def11191a6
