[INFO] fetching crate lay-steane 0.1.2...
[INFO] checking lay-steane-0.1.2 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate lay-steane 0.1.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate lay-steane 0.1.2 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lay-steane 0.1.2
[INFO] finished tweaking crates.io crate lay-steane 0.1.2
[INFO] tweaked toml for crates.io crate lay-steane 0.1.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate lay-steane 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "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 thread_local v1.1.3
[INFO] [stderr]   Downloaded paste v0.1.18
[INFO] [stderr]   Downloaded paste-impl v0.1.18
[INFO] [stderr]   Downloaded python3-sys v0.5.2
[INFO] [stderr]   Downloaded regex-syntax v0.6.22
[INFO] [stderr]   Downloaded libc v0.2.86
[INFO] [stderr]   Downloaded rand_xorshift v0.2.0
[INFO] [stderr]   Downloaded cpython v0.5.2
[INFO] [stderr]   Downloaded regex v1.4.3
[INFO] [stderr]   Downloaded once_cell v1.5.2
[INFO] [stderr]   Downloaded syn v1.0.60
[INFO] [stderr]   Downloaded pin-project-lite v0.1.11
[INFO] [stderr]   Downloaded lay-simulator-blueqat v0.1.0
[INFO] [stderr]   Downloaded lay v0.1.0
[INFO] [stderr]   Downloaded lay-simulator-gk v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a7333763a8f19d283401aadf30dacb9fe647e25bad4b5a742257ad5d0ec31bd
[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" "0a7333763a8f19d283401aadf30dacb9fe647e25bad4b5a742257ad5d0ec31bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a7333763a8f19d283401aadf30dacb9fe647e25bad4b5a742257ad5d0ec31bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a7333763a8f19d283401aadf30dacb9fe647e25bad4b5a742257ad5d0ec31bd", kill_on_drop: false }`
[INFO] [stdout] 0a7333763a8f19d283401aadf30dacb9fe647e25bad4b5a742257ad5d0ec31bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ba094466f07f81ca652cfb61578b097f39401d5596708cb56ebf3cea427fbdf
[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" "8ba094466f07f81ca652cfb61578b097f39401d5596708cb56ebf3cea427fbdf", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking lay v0.1.0
[INFO] [stderr]     Checking lay-simulator-gk v0.1.0
[INFO] [stderr]     Checking lay-steane v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/lib.rs:363:13
[INFO] [stdout]     |
[INFO] [stdout] 363 |         for i in 0..10 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/lib.rs:379:13
[INFO] [stdout]     |
[INFO] [stdout] 379 |         for i in 0..10 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/lib.rs:395:13
[INFO] [stdout]     |
[INFO] [stdout] 395 |         for i in 0..10 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.77s
[INFO] running `Command { std: "docker" "inspect" "8ba094466f07f81ca652cfb61578b097f39401d5596708cb56ebf3cea427fbdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ba094466f07f81ca652cfb61578b097f39401d5596708cb56ebf3cea427fbdf", kill_on_drop: false }`
[INFO] [stdout] 8ba094466f07f81ca652cfb61578b097f39401d5596708cb56ebf3cea427fbdf