[INFO] cloning repository https://github.com/rail44/neu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rail44/neu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frail44%2Fneu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frail44%2Fneu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f7cc88ad7133b085f1a92b9dab168df6adc31a1c
[INFO] checking rail44/neu against master#0a8629bff642c3c3b84bb644c0099194f063b627 for pr-86231
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frail44%2Fneu" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rail44/neu on toolchain 0a8629bff642c3c3b84bb644c0099194f063b627
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rail44/neu
[INFO] finished tweaking git repo https://github.com/rail44/neu
[INFO] tweaked toml for git repo https://github.com/rail44/neu written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/rail44/neu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "fetch" "--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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ed79e17f1ec34547108723966e39c13e7e11e6beee2209a0aa100359485ae9e
[INFO] running `Command { std: "docker" "start" "-a" "1ed79e17f1ec34547108723966e39c13e7e11e6beee2209a0aa100359485ae9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ed79e17f1ec34547108723966e39c13e7e11e6beee2209a0aa100359485ae9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ed79e17f1ec34547108723966e39c13e7e11e6beee2209a0aa100359485ae9e", kill_on_drop: false }`
[INFO] [stdout] 1ed79e17f1ec34547108723966e39c13e7e11e6beee2209a0aa100359485ae9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b40871d26a4695a1f256f1da544b3d477b76033b323b40122b35713dffb3dc08
[INFO] running `Command { std: "docker" "start" "-a" "b40871d26a4695a1f256f1da544b3d477b76033b323b40122b35713dffb3dc08", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking fastrand v1.4.1
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking tracing-core v0.2.0 (https://github.com/tokio-rs/tracing#3ddf54f4)
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking ropey v1.3.0
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking dirs v3.0.2
[INFO] [stderr]     Checking spinning_top v0.2.4
[INFO] [stderr]     Checking nanorand v0.5.2
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking tracing-log v0.2.0 (https://github.com/tokio-rs/tracing#3ddf54f4)
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-io v1.4.1
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]     Checking async-process v1.1.0
[INFO] [stderr]     Checking async-net v1.6.0
[INFO] [stderr]     Checking tracing-serde v0.2.0 (https://github.com/tokio-rs/tracing#3ddf54f4)
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking smol v1.2.5
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling tracing-attributes v0.2.0 (https://github.com/tokio-rs/tracing#3ddf54f4)
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking tracing v0.2.0 (https://github.com/tokio-rs/tracing#3ddf54f4)
[INFO] [stderr]     Checking flume v0.10.7
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking tracing-subscriber v0.3.0 (https://github.com/tokio-rs/tracing#3ddf54f4)
[INFO] [stderr]     Checking neu v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `nth`
[INFO] [stdout]   --> src/action.rs:31:19
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub(crate) fn nth(self, n: usize) -> Selection {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `once`
[INFO] [stdout]   --> src/action.rs:64:19
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub(crate) fn once(self) -> Action {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `nth`
[INFO] [stdout]   --> src/action.rs:71:19
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub(crate) fn nth(self, n: usize) -> Action {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `nth`
[INFO] [stdout]    --> src/action.rs:103:19
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub(crate) fn nth(self, n: usize) -> Action {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `nth`
[INFO] [stdout]    --> src/action.rs:145:19
[INFO] [stdout]     |
[INFO] [stdout] 145 |     pub(crate) fn nth(self, n: usize) -> Action {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_update`
[INFO] [stdout]   --> src/compute.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub(crate) fn get_update<C: Compute>(&mut self) -> Option<C> {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `nth`
[INFO] [stdout]   --> src/action.rs:31:19
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub(crate) fn nth(self, n: usize) -> Selection {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `once`
[INFO] [stdout]   --> src/action.rs:64:19
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub(crate) fn once(self) -> Action {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `nth`
[INFO] [stdout]   --> src/action.rs:71:19
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub(crate) fn nth(self, n: usize) -> Action {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `nth`
[INFO] [stdout]    --> src/action.rs:103:19
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub(crate) fn nth(self, n: usize) -> Action {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `nth`
[INFO] [stdout]    --> src/action.rs:145:19
[INFO] [stdout]     |
[INFO] [stdout] 145 |     pub(crate) fn nth(self, n: usize) -> Action {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_update`
[INFO] [stdout]   --> src/compute.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub(crate) fn get_update<C: Compute>(&mut self) -> Option<C> {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.84s
[INFO] running `Command { std: "docker" "inspect" "b40871d26a4695a1f256f1da544b3d477b76033b323b40122b35713dffb3dc08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b40871d26a4695a1f256f1da544b3d477b76033b323b40122b35713dffb3dc08", kill_on_drop: false }`
[INFO] [stdout] b40871d26a4695a1f256f1da544b3d477b76033b323b40122b35713dffb3dc08