[INFO] fetching crate frac 2.1.0...
[INFO] checking frac-2.1.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate frac 2.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate frac 2.1.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54ac52f57dcd042df925ae93da1b5426d74fece942bfba2dceb19cd6638a958c
[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" "54ac52f57dcd042df925ae93da1b5426d74fece942bfba2dceb19cd6638a958c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54ac52f57dcd042df925ae93da1b5426d74fece942bfba2dceb19cd6638a958c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54ac52f57dcd042df925ae93da1b5426d74fece942bfba2dceb19cd6638a958c", kill_on_drop: false }`
[INFO] [stdout] 54ac52f57dcd042df925ae93da1b5426d74fece942bfba2dceb19cd6638a958c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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] 06e0daa9cace4b5f3296d144516366d926269f983f81ff65dd92281dcee237eb
[INFO] running `Command { std: "docker" "start" "-a" "06e0daa9cace4b5f3296d144516366d926269f983f81ff65dd92281dcee237eb", kill_on_drop: false }`
[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 0.54s
[INFO] running `Command { std: "docker" "inspect" "06e0daa9cace4b5f3296d144516366d926269f983f81ff65dd92281dcee237eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06e0daa9cace4b5f3296d144516366d926269f983f81ff65dd92281dcee237eb", kill_on_drop: false }`
[INFO] [stdout] 06e0daa9cace4b5f3296d144516366d926269f983f81ff65dd92281dcee237eb