[INFO] fetching crate shalc 0.1.0...
[INFO] checking shalc-0.1.0 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate shalc 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate shalc 0.1.0 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shalc 0.1.0
[INFO] finished tweaking crates.io crate shalc 0.1.0
[INFO] tweaked toml for crates.io crate shalc 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04878c41dea91b1dab05e47f922c49c2319f7660102782cc4c3ac44997083c32
[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" "04878c41dea91b1dab05e47f922c49c2319f7660102782cc4c3ac44997083c32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04878c41dea91b1dab05e47f922c49c2319f7660102782cc4c3ac44997083c32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04878c41dea91b1dab05e47f922c49c2319f7660102782cc4c3ac44997083c32", kill_on_drop: false }`
[INFO] [stdout] 04878c41dea91b1dab05e47f922c49c2319f7660102782cc4c3ac44997083c32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37e8a1b11642395470f248c9e0f2a23ecc4065c303c3b316213e9bea3f40b358
[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" "37e8a1b11642395470f248c9e0f2a23ecc4065c303c3b316213e9bea3f40b358", kill_on_drop: false }`
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking arc-swap v0.4.8
[INFO] [stderr]     Checking slog-scope v4.3.0
[INFO] [stderr]     Checking slog-stdlog v4.1.0
[INFO] [stderr]     Checking shalc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `prev_local_calcs`
[INFO] [stdout]    --> src/lib.rs:373:13
[INFO] [stdout]     |
[INFO] [stdout] 373 |             prev_local_calcs: &mut Option<Self::LocalCalcs>,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_local_calcs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `local_calcs`
[INFO] [stdout]    --> src/lib.rs:378:30
[INFO] [stdout]     |
[INFO] [stdout] 378 |         fn update(&mut self, local_calcs: &mut Option<Self::LocalCalcs>) -> calculation::State {
[INFO] [stdout]     |                              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_local_calcs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "37e8a1b11642395470f248c9e0f2a23ecc4065c303c3b316213e9bea3f40b358", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37e8a1b11642395470f248c9e0f2a23ecc4065c303c3b316213e9bea3f40b358", kill_on_drop: false }`
[INFO] [stdout] 37e8a1b11642395470f248c9e0f2a23ecc4065c303c3b316213e9bea3f40b358