[INFO] fetching crate yew 0.16.2...
[INFO] checking yew-0.16.2 against master#783139bd8fc3b94fac9a1bf81bba2c506e8221b6 for pr-72644
[INFO] extracting crate yew 0.16.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate yew 0.16.2 on toolchain 783139bd8fc3b94fac9a1bf81bba2c506e8221b6
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate yew 0.16.2
[INFO] finished tweaking crates.io crate yew 0.16.2
[INFO] tweaked toml for crates.io crate yew 0.16.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "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] 738cd37428aa9a006fd398d7b53a7a292cfe931d06ac1827e04953ef16933941
[INFO] running `"docker" "start" "-a" "738cd37428aa9a006fd398d7b53a7a292cfe931d06ac1827e04953ef16933941"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling yew v0.16.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]     Checking trybuild v1.0.27
[INFO] [stderr]     Checking web-sys v0.3.40
[INFO] [stderr]     Checking gloo-events v0.1.1
[INFO] [stderr]     Checking gloo-console-timer v0.1.0
[INFO] [stderr]     Checking gloo-timers v0.2.1
[INFO] [stderr]     Checking gloo-file v0.1.0
[INFO] [stderr]     Checking gloo v0.2.1
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:101:1
[INFO] [stderr]     |
[INFO] [stderr] 101 |    #[proc_macro_hack(support_nested)]
[INFO] [stderr]     |   _^
[INFO] [stderr]     |  |_|
[INFO] [stderr]     | ||
[INFO] [stderr] 102 | || pub use yew_macro::html;
[INFO] [stderr]     | ||_|_____________________^
[INFO] [stderr]     |  |_|
[INFO] [stderr]     |    help: remove this `mut`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/html/scope.rs:438:13
[INFO] [stderr]     |
[INFO] [stderr] 438 |                html! {}
[INFO] [stderr]     |                -------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:101:1
[INFO] [stderr]     |
[INFO] [stderr] 101 |    #[proc_macro_hack(support_nested)]
[INFO] [stderr]     |   _^
[INFO] [stderr]     |  |_|
[INFO] [stderr]     | ||
[INFO] [stderr] 102 | || pub use yew_macro::html;
[INFO] [stderr]     | ||_|_____________________^
[INFO] [stderr]     |  |_|
[INFO] [stderr]     |    help: remove this `mut`
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/virtual_dom/vlist.rs:212:24
[INFO] [stderr]     |
[INFO] [stderr] 212 |            let fragment = html! {
[INFO] [stderr]     |  _________________________-
[INFO] [stderr] 213 | |              <>
[INFO] [stderr] 214 | |              </>
[INFO] [stderr] 215 | |          };
[INFO] [stderr]     | |__________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.95s
[INFO] running `"docker" "inspect" "738cd37428aa9a006fd398d7b53a7a292cfe931d06ac1827e04953ef16933941"`
[INFO] running `"docker" "rm" "-f" "738cd37428aa9a006fd398d7b53a7a292cfe931d06ac1827e04953ef16933941"`
[INFO] [stdout] 738cd37428aa9a006fd398d7b53a7a292cfe931d06ac1827e04953ef16933941