[INFO] cloning repository https://github.com/zowens/paxos-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zowens/paxos-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzowens%2Fpaxos-rs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzowens%2Fpaxos-rs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] da9de259328f829fcdd1e8305bf44b91b7ee28ca
[INFO] checking zowens/paxos-rs against try#38f08371587f97c145dedb2c055ac7b01bf1e788 for pr-65294
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzowens%2Fpaxos-rs" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zowens/paxos-rs on toolchain 38f08371587f97c145dedb2c055ac7b01bf1e788
[INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zowens/paxos-rs
[INFO] finished tweaking git repo https://github.com/zowens/paxos-rs
[INFO] tweaked toml for git repo https://github.com/zowens/paxos-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/zowens/paxos-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7231b6e47905bda25d7b46254e65b9f474a775bbae9c3d8806ff6edbe4b43c0a
[INFO] running `"docker" "start" "-a" "7231b6e47905bda25d7b46254e65b9f474a775bbae9c3d8806ff6edbe4b43c0a"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling regex v1.1.3
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]     Checking aho-corasick v0.7.1
[INFO] [stderr]     Checking serde_cbor v0.9.0
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking tokio-threadpool v0.1.13
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking tokio v0.1.18
[INFO] [stderr]     Checking paxos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `proposals::*`
[INFO] [stderr]    --> src/multipaxos.rs:490:9
[INFO] [stderr]     |
[INFO] [stderr] 490 |     use proposals::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/paxos/instance.rs:433:28
[INFO] [stderr]     |
[INFO] [stderr] 433 |                     Vacant(mut e) => {
[INFO] [stderr]     |                            ----^
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/paxos/instance.rs:441:21
[INFO] [stderr]     |
[INFO] [stderr] 441 |                 let mut proposal_status =
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/paxos/instance.rs:433:28
[INFO] [stderr]     |
[INFO] [stderr] 433 |                     Vacant(mut e) => {
[INFO] [stderr]     |                            ----^
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/paxos/instance.rs:441:21
[INFO] [stderr]     |
[INFO] [stderr] 441 |                 let mut proposal_status =
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.28s
[INFO] running `"docker" "inspect" "7231b6e47905bda25d7b46254e65b9f474a775bbae9c3d8806ff6edbe4b43c0a"`
[INFO] running `"docker" "rm" "-f" "7231b6e47905bda25d7b46254e65b9f474a775bbae9c3d8806ff6edbe4b43c0a"`
[INFO] [stdout] 7231b6e47905bda25d7b46254e65b9f474a775bbae9c3d8806ff6edbe4b43c0a