[INFO] fetching crate rsrl_domains 0.2.0...
[INFO] checking rsrl_domains-0.2.0 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate rsrl_domains 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rsrl_domains 0.2.0 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rsrl_domains 0.2.0
[INFO] finished tweaking crates.io crate rsrl_domains 0.2.0
[INFO] tweaked toml for crates.io crate rsrl_domains 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9828566bb5471957e22da889a20e6c82580aad11dfd5a1ad13d0a1971deac284
[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" "9828566bb5471957e22da889a20e6c82580aad11dfd5a1ad13d0a1971deac284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9828566bb5471957e22da889a20e6c82580aad11dfd5a1ad13d0a1971deac284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9828566bb5471957e22da889a20e6c82580aad11dfd5a1ad13d0a1971deac284", kill_on_drop: false }`
[INFO] [stdout] 9828566bb5471957e22da889a20e6c82580aad11dfd5a1ad13d0a1971deac284
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 52fa82c8c24722edf16d7a40ccf185b7e8d655fdeb90b68fdc6dd7ee72a40c08
[INFO] running `Command { std: "docker" "start" "-a" "52fa82c8c24722edf16d7a40ccf185b7e8d655fdeb90b68fdc6dd7ee72a40c08", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking spaces v5.0.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rsrl_domains v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/cart_pole.rs:147:18
[INFO] [stdout]     |
[INFO] [stdout] 147 |         let (ns, r) = m.step(&0);
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/cart_pole.rs:155:18
[INFO] [stdout]     |
[INFO] [stdout] 155 |         let (ns, r) = m.step(&0);
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/cart_pole.rs:168:18
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let (ns, r) = m.step(&1);
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/cart_pole.rs:176:18
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let (ns, r) = m.step(&1);
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.12s
[INFO] running `Command { std: "docker" "inspect" "52fa82c8c24722edf16d7a40ccf185b7e8d655fdeb90b68fdc6dd7ee72a40c08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52fa82c8c24722edf16d7a40ccf185b7e8d655fdeb90b68fdc6dd7ee72a40c08", kill_on_drop: false }`
[INFO] [stdout] 52fa82c8c24722edf16d7a40ccf185b7e8d655fdeb90b68fdc6dd7ee72a40c08