[INFO] fetching crate tst 0.10.1...
[INFO] checking tst-0.10.1 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate tst 0.10.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tst 0.10.1 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jemallocator v0.1.9
[INFO] [stderr]   Downloaded jemalloc-sys v0.1.8
[INFO] running `Command { std: "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" "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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4472059ef0b9e3b8aa32f744346e0f18f863aa33357fd6b702fc572b2a47d5a8
[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" "4472059ef0b9e3b8aa32f744346e0f18f863aa33357fd6b702fc572b2a47d5a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4472059ef0b9e3b8aa32f744346e0f18f863aa33357fd6b702fc572b2a47d5a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4472059ef0b9e3b8aa32f744346e0f18f863aa33357fd6b702fc572b2a47d5a8", kill_on_drop: false }`
[INFO] [stdout] 4472059ef0b9e3b8aa32f744346e0f18f863aa33357fd6b702fc572b2a47d5a8
[INFO] running `Command { std: "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" "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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ab0822b348c899cd11b4f48afaa6e8aa9d0f276b535e0924635179f2c05d3ad
[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" "8ab0822b348c899cd11b4f48afaa6e8aa9d0f276b535e0924635179f2c05d3ad", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling fs_extra v1.2.0
[INFO] [stderr]     Checking tst v0.10.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[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] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling jemalloc-sys v0.1.8
[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 2m 17s
[INFO] running `Command { std: "docker" "inspect" "8ab0822b348c899cd11b4f48afaa6e8aa9d0f276b535e0924635179f2c05d3ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab0822b348c899cd11b4f48afaa6e8aa9d0f276b535e0924635179f2c05d3ad", kill_on_drop: false }`
[INFO] [stdout] 8ab0822b348c899cd11b4f48afaa6e8aa9d0f276b535e0924635179f2c05d3ad