[INFO] crate idlset 0.1.8 is already in cache
[INFO] checking idlset-0.1.8 against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] extracting crate idlset 0.1.8 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate idlset 0.1.8 on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate idlset 0.1.8
[INFO] finished tweaking crates.io crate idlset 0.1.8
[INFO] tweaked toml for crates.io crate idlset 0.1.8 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate idlset 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8072131a62c8c1fe7c09cd0849853e8781c27fdef175d1f48c84b11aa315eaa
[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" "f8072131a62c8c1fe7c09cd0849853e8781c27fdef175d1f48c84b11aa315eaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8072131a62c8c1fe7c09cd0849853e8781c27fdef175d1f48c84b11aa315eaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8072131a62c8c1fe7c09cd0849853e8781c27fdef175d1f48c84b11aa315eaa", kill_on_drop: false }`
[INFO] [stdout] f8072131a62c8c1fe7c09cd0849853e8781c27fdef175d1f48c84b11aa315eaa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f606dc39182840e52e73905208943b1b55ff9abaf2db8e9cbcc189d8ba2b7107
[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" "f606dc39182840e52e73905208943b1b55ff9abaf2db8e9cbcc189d8ba2b7107", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]     Checking idlset v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/idl_simple.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn len(&self) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/idl_simple.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn len(&self) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.99s
[INFO] running `Command { std: "docker" "inspect" "f606dc39182840e52e73905208943b1b55ff9abaf2db8e9cbcc189d8ba2b7107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f606dc39182840e52e73905208943b1b55ff9abaf2db8e9cbcc189d8ba2b7107", kill_on_drop: false }`
[INFO] [stdout] f606dc39182840e52e73905208943b1b55ff9abaf2db8e9cbcc189d8ba2b7107