[INFO] cloning repository https://github.com/mcginty/chanbench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mcginty/chanbench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcginty%2Fchanbench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcginty%2Fchanbench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13130e6421a6bb985dd22a1e8e6e3b38c350847b
[INFO] checking mcginty/chanbench against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcginty%2Fchanbench" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mcginty/chanbench on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mcginty/chanbench
[INFO] finished tweaking git repo https://github.com/mcginty/chanbench
[INFO] tweaked toml for git repo https://github.com/mcginty/chanbench written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mcginty/chanbench already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c925e540c2c1eb6dae601d1fbdc53c05ac0deb2a71ef27824433b6c3103a3751
[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" "c925e540c2c1eb6dae601d1fbdc53c05ac0deb2a71ef27824433b6c3103a3751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c925e540c2c1eb6dae601d1fbdc53c05ac0deb2a71ef27824433b6c3103a3751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c925e540c2c1eb6dae601d1fbdc53c05ac0deb2a71ef27824433b6c3103a3751", kill_on_drop: false }`
[INFO] [stdout] c925e540c2c1eb6dae601d1fbdc53c05ac0deb2a71ef27824433b6c3103a3751
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ecc93068a6490cbd4ebfdd712d08bf4d9d6afef26ea6260c2d7599b3c1b61ece
[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" "ecc93068a6490cbd4ebfdd712d08bf4d9d6afef26ea6260c2d7599b3c1b61ece", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking lazy_static v1.0.1
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling rand_core v0.2.0
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]    Compiling subtle v0.6.2
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking stable_deref_trait v1.0.0
[INFO] [stderr]     Checking smallvec v0.6.1
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking subtle v0.5.1
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking static_slice v0.0.3
[INFO] [stderr]     Checking crossbeam-utils v0.4.0
[INFO] [stderr]     Checking arrayref v0.3.4
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking chacha20-poly1305-aead v0.1.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling rand v0.5.0-pre.2
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking bytes v0.4.8
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking tokio-executor v0.1.2
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]     Checking tokio-io v0.1.6
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]    Compiling snow v0.1.12 (https://github.com/mcginty/snow?branch=wireguard#e2baf82a)
[INFO] [stderr]     Checking tokio-timer v0.2.3
[INFO] [stderr]    Compiling generic-array v0.9.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.3
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking digest v0.7.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36 (https://github.com/mcginty/rust-crypto#24d8c077)
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling ring v0.13.0-alpha5
[INFO] [stderr]     Checking crossbeam-channel v0.2.1
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking tokio-reactor v0.1.1
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking tokio-fs v0.1.0
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio-udp v0.1.0
[INFO] [stderr]    Compiling curve25519-dalek v0.17.0
[INFO] [stderr]     Checking tokio v0.1.6
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking backtrace v0.3.8
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking x25519-dalek v0.2.0
[INFO] [stderr]     Checking chanbench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:255:17
[INFO] [stdout]     |
[INFO] [stdout] 255 |             let mut tx = tx.clone();
[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/main.rs:255:17
[INFO] [stdout]     |
[INFO] [stdout] 255 |             let mut tx = tx.clone();
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.18s
[INFO] running `Command { std: "docker" "inspect" "ecc93068a6490cbd4ebfdd712d08bf4d9d6afef26ea6260c2d7599b3c1b61ece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecc93068a6490cbd4ebfdd712d08bf4d9d6afef26ea6260c2d7599b3c1b61ece", kill_on_drop: false }`
[INFO] [stdout] ecc93068a6490cbd4ebfdd712d08bf4d9d6afef26ea6260c2d7599b3c1b61ece