[INFO] fetching crate lay-steane 0.1.2...
[INFO] checking lay-steane-0.1.2 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate lay-steane 0.1.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate lay-steane 0.1.2 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 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-8/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded python3-sys v0.5.2
[INFO] [stderr]   Downloaded cpython v0.5.2
[INFO] [stderr]   Downloaded lay-simulator-blueqat v0.1.0
[INFO] [stderr]   Downloaded lay-simulator-gk v0.1.0
[INFO] [stderr]   Downloaded lay v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] f74942dba84294f651a8146e0bce4394abbdbf060295ef3e5f842a417d2c582a
[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" "f74942dba84294f651a8146e0bce4394abbdbf060295ef3e5f842a417d2c582a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f74942dba84294f651a8146e0bce4394abbdbf060295ef3e5f842a417d2c582a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f74942dba84294f651a8146e0bce4394abbdbf060295ef3e5f842a417d2c582a", kill_on_drop: false }`
[INFO] [stdout] f74942dba84294f651a8146e0bce4394abbdbf060295ef3e5f842a417d2c582a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 56f31f0fcd9b9279d1820a0754e03b7b6fe85a6599c80bc258017ea0282b58a1
[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" "56f31f0fcd9b9279d1820a0754e03b7b6fe85a6599c80bc258017ea0282b58a1", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[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 3.19s
[INFO] running `Command { std: "docker" "inspect" "56f31f0fcd9b9279d1820a0754e03b7b6fe85a6599c80bc258017ea0282b58a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56f31f0fcd9b9279d1820a0754e03b7b6fe85a6599c80bc258017ea0282b58a1", kill_on_drop: false }`
[INFO] [stdout] 56f31f0fcd9b9279d1820a0754e03b7b6fe85a6599c80bc258017ea0282b58a1