[INFO] fetching crate tst 0.10.1... [INFO] checking tst-0.10.1 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744 [INFO] extracting crate tst 0.10.1 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate tst 0.10.1 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-7/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6a1b776e1131bee074c41c270d9798ba9bf5e15c44a2a5daee66bf470af46321 [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" "6a1b776e1131bee074c41c270d9798ba9bf5e15c44a2a5daee66bf470af46321", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6a1b776e1131bee074c41c270d9798ba9bf5e15c44a2a5daee66bf470af46321", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6a1b776e1131bee074c41c270d9798ba9bf5e15c44a2a5daee66bf470af46321", kill_on_drop: false }` [INFO] [stdout] 6a1b776e1131bee074c41c270d9798ba9bf5e15c44a2a5daee66bf470af46321 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8f8d851bd40d83aa662b018f7aeab06c1bc7d9e29ec493425686a3ccc7d7dbfc [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" "8f8d851bd40d83aa662b018f7aeab06c1bc7d9e29ec493425686a3ccc7d7dbfc", kill_on_drop: false }` [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling libc v0.2.93 [INFO] [stderr] Compiling cc v1.0.67 [INFO] [stderr] Checking tst v0.10.1 (/opt/rustwide/workdir) [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>(&mut self, iter: I) { [INFO] [stdout] | ^^^^^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling jemalloc-sys v0.1.8 [INFO] [stderr] Checking rand_os v0.1.3 [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>(&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 2m 17s [INFO] running `Command { std: "docker" "inspect" "8f8d851bd40d83aa662b018f7aeab06c1bc7d9e29ec493425686a3ccc7d7dbfc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8f8d851bd40d83aa662b018f7aeab06c1bc7d9e29ec493425686a3ccc7d7dbfc", kill_on_drop: false }` [INFO] [stdout] 8f8d851bd40d83aa662b018f7aeab06c1bc7d9e29ec493425686a3ccc7d7dbfc