[INFO] fetching crate tst 0.10.1...
[INFO] checking tst-0.10.1 against beta for pr-78714
[INFO] extracting crate tst 0.10.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate tst 0.10.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tst 0.10.1
[INFO] finished tweaking crates.io crate tst 0.10.1
[INFO] tweaked toml for crates.io crate tst 0.10.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] 10ef2383f02be01147a9529e96d190e56c372c9c91a8d8e04c1b5a289bdf7054
[INFO] running `Command { std: "docker" "start" "-a" "10ef2383f02be01147a9529e96d190e56c372c9c91a8d8e04c1b5a289bdf7054", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10ef2383f02be01147a9529e96d190e56c372c9c91a8d8e04c1b5a289bdf7054", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10ef2383f02be01147a9529e96d190e56c372c9c91a8d8e04c1b5a289bdf7054", kill_on_drop: false }`
[INFO] [stdout] 10ef2383f02be01147a9529e96d190e56c372c9c91a8d8e04c1b5a289bdf7054
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b231880c0f5b97e7ba92c6995e8303edc2d7fb2a34d75b798c91b5224bf7ef19
[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" "b231880c0f5b97e7ba92c6995e8303edc2d7fb2a34d75b798c91b5224bf7ef19", kill_on_drop: false }`
[INFO] [stderr]     Checking tst v0.10.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling jemalloc-sys v0.1.8
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/set.rs:268:17
[INFO] [stdout]     |
[INFO] [stdout] 268 | impl<'x> Extend<(&'x str)> for TSTSet {
[INFO] [stdout]     |                 ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/set.rs:270:36
[INFO] [stdout]     |
[INFO] [stdout] 270 |     fn extend<I: IntoIterator<Item=(&'x str)>>(&mut self, iter: I) {
[INFO] [stdout]     |                                    ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking jemallocator v0.1.9
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/set.rs:268:17
[INFO] [stdout]     |
[INFO] [stdout] 268 | impl<'x> Extend<(&'x str)> for TSTSet {
[INFO] [stdout]     |                 ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/set.rs:270:36
[INFO] [stdout]     |
[INFO] [stdout] 270 |     fn extend<I: IntoIterator<Item=(&'x str)>>(&mut self, iter: I) {
[INFO] [stdout]     |                                    ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 53s
[INFO] running `Command { std: "docker" "inspect" "b231880c0f5b97e7ba92c6995e8303edc2d7fb2a34d75b798c91b5224bf7ef19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b231880c0f5b97e7ba92c6995e8303edc2d7fb2a34d75b798c91b5224bf7ef19", kill_on_drop: false }`
[INFO] [stdout] b231880c0f5b97e7ba92c6995e8303edc2d7fb2a34d75b798c91b5224bf7ef19