[INFO] fetching crate plaster 0.2.5...
[INFO] checking plaster-0.2.5 against master#201e52e5fe73ccf3dd22946b1216ad8d64f8c2ba for pr-63809
[INFO] extracting crate plaster 0.2.5 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate plaster 0.2.5 on toolchain 201e52e5fe73ccf3dd22946b1216ad8d64f8c2ba
[INFO] running `"/workspace/cargo-home/bin/cargo" "+201e52e5fe73ccf3dd22946b1216ad8d64f8c2ba" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate plaster 0.2.5
[INFO] finished tweaking crates.io crate plaster 0.2.5
[INFO] tweaked toml for crates.io crate plaster 0.2.5 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+201e52e5fe73ccf3dd22946b1216ad8d64f8c2ba" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+201e52e5fe73ccf3dd22946b1216ad8d64f8c2ba" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "/opt/rustwide/cargo-home/bin/cargo" "+201e52e5fe73ccf3dd22946b1216ad8d64f8c2ba" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f2732b074139b2cdf89b417a38a1a841fe3274ce99d98af852f4fafb701450b2
[INFO] running `"docker" "start" "-a" "f2732b074139b2cdf89b417a38a1a841fe3274ce99d98af852f4fafb701450b2"`
[INFO] [stderr]    Compiling web-sys v0.3.28
[INFO] [stderr]     Checking plaster v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/virtual_dom/vlist.rs:70:22
[INFO] [stderr]    |
[INFO] [stderr] 70 |                 Some(mut vnode) => {
[INFO] [stderr]    |                      ----^^^^^
[INFO] [stderr]    |                      |
[INFO] [stderr]    |                      help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/virtual_dom/vlist.rs:70:22
[INFO] [stderr]    |
[INFO] [stderr] 70 |                 Some(mut vnode) => {
[INFO] [stderr]    |                      ----^^^^^
[INFO] [stderr]    |                      |
[INFO] [stderr]    |                      help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.64s
[INFO] running `"docker" "inspect" "f2732b074139b2cdf89b417a38a1a841fe3274ce99d98af852f4fafb701450b2"`
[INFO] running `"docker" "rm" "-f" "f2732b074139b2cdf89b417a38a1a841fe3274ce99d98af852f4fafb701450b2"`
[INFO] [stdout] f2732b074139b2cdf89b417a38a1a841fe3274ce99d98af852f4fafb701450b2