[INFO] fetching crate openraft 0.9.18...
[INFO] checking openraft-0.9.18 against master#dc8fe1f81c6cf13c0987944c525b2aa81625b5d0 for pr-133502-4
[INFO] extracting crate openraft 0.9.18 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate openraft 0.9.18 on toolchain dc8fe1f81c6cf13c0987944c525b2aa81625b5d0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate openraft 0.9.18
[INFO] finished tweaking crates.io crate openraft 0.9.18
[INFO] tweaked toml for crates.io crate openraft 0.9.18 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate openraft 0.9.18 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39a315e416856c287719bd05c23b569dccfdf7645895520840369cae3e8184f2
[INFO] running `Command { std: "docker" "start" "-a" "39a315e416856c287719bd05c23b569dccfdf7645895520840369cae3e8184f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39a315e416856c287719bd05c23b569dccfdf7645895520840369cae3e8184f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39a315e416856c287719bd05c23b569dccfdf7645895520840369cae3e8184f2", kill_on_drop: false }`
[INFO] [stdout] 39a315e416856c287719bd05c23b569dccfdf7645895520840369cae3e8184f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9eddf0689dcadb0eea5418106299edec2799686f6be7d3ae6d08edc743af3ac8
[INFO] running `Command { std: "docker" "start" "-a" "9eddf0689dcadb0eea5418106299edec2799686f6be7d3ae6d08edc743af3ac8", kill_on_drop: false }`
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[INFO] [stderr]     Checking openraft v0.9.18 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core/tick.rs:81:41
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub(crate) async fn tick_loop(self, mut cancel_rx: oneshot::Receiver<()>) {
[INFO] [stdout]    |                                         ----^^^^^^^^^
[INFO] [stdout]    |                                         |
[INFO] [stdout]    |                                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core/tick.rs:88:17
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let mut sleep_fut = C::sleep_until(at);
[INFO] [stdout]    |                 ----^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network/snapshot_transport.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |         mut cancel: impl Future<Output = ReplicationClosed> + OptionalSend + 'static,
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core/tick.rs:81:41
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub(crate) async fn tick_loop(self, mut cancel_rx: oneshot::Receiver<()>) {
[INFO] [stdout]    |                                         ----^^^^^^^^^
[INFO] [stdout]    |                                         |
[INFO] [stdout]    |                                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core/tick.rs:88:17
[INFO] [stdout]    |
[INFO] [stdout] 88 |             let mut sleep_fut = C::sleep_until(at);
[INFO] [stdout]    |                 ----^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/network/snapshot_transport.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |         mut cancel: impl Future<Output = ReplicationClosed> + OptionalSend + 'static,
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.86s
[INFO] running `Command { std: "docker" "inspect" "9eddf0689dcadb0eea5418106299edec2799686f6be7d3ae6d08edc743af3ac8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eddf0689dcadb0eea5418106299edec2799686f6be7d3ae6d08edc743af3ac8", kill_on_drop: false }`
[INFO] [stdout] 9eddf0689dcadb0eea5418106299edec2799686f6be7d3ae6d08edc743af3ac8