[INFO] fetching crate maver 0.1.0...
[INFO] checking maver-0.1.0 against master#5ad98b4026d5172f27615b105658bc8bfd677be8 for pr-129422
[INFO] extracting crate maver 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate maver 0.1.0 on toolchain 5ad98b4026d5172f27615b105658bc8bfd677be8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maver 0.1.0
[INFO] finished tweaking crates.io crate maver 0.1.0
[INFO] tweaked toml for crates.io crate maver 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate maver 0.1.0 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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.1
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded nodrop v0.1.13
[INFO] [stderr]   Downloaded wasi v0.5.0
[INFO] [stderr]   Downloaded either v1.5.2
[INFO] [stderr]   Downloaded rand_distr v0.2.1
[INFO] [stderr]   Downloaded getrandom v0.1.10
[INFO] [stderr]   Downloaded rayon-core v1.5.0
[INFO] [stderr]   Downloaded rayon v1.1.0
[INFO] [stderr]   Downloaded rand v0.7.0
[INFO] [stderr]   Downloaded serde_json v1.0.40
[INFO] [stderr]   Downloaded serde v1.0.99
[INFO] [stderr]   Downloaded crossbeam-deque v0.6.3
[INFO] [stderr]   Downloaded syn v1.0.3
[INFO] [stderr]   Downloaded rand_core v0.5.0
[INFO] [stderr]   Downloaded serde_derive v1.0.99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7789574561066a8e94188c249a5cfa78585512d5d1c432ea319ff2d4b619390
[INFO] running `Command { std: "docker" "start" "-a" "e7789574561066a8e94188c249a5cfa78585512d5d1c432ea319ff2d4b619390", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7789574561066a8e94188c249a5cfa78585512d5d1c432ea319ff2d4b619390", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7789574561066a8e94188c249a5cfa78585512d5d1c432ea319ff2d4b619390", kill_on_drop: false }`
[INFO] [stdout] e7789574561066a8e94188c249a5cfa78585512d5d1c432ea319ff2d4b619390
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 683140172a7679e6427c3a547c92337ba25b1e8a2e2ada3c80c9d927e43a5aa2
[INFO] running `Command { std: "docker" "start" "-a" "683140172a7679e6427c3a547c92337ba25b1e8a2e2ada3c80c9d927e43a5aa2", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling getrandom v0.1.10
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]     Checking rand_distr v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking maver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `VecUtil` is never used
[INFO] [stdout]    --> src/lib.rs:403:7
[INFO] [stdout]     |
[INFO] [stdout] 403 | trait VecUtil<T> {
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `VecUtil` is never used
[INFO] [stdout]    --> src/lib.rs:403:7
[INFO] [stdout]     |
[INFO] [stdout] 403 | trait VecUtil<T> {
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.08s
[INFO] running `Command { std: "docker" "inspect" "683140172a7679e6427c3a547c92337ba25b1e8a2e2ada3c80c9d927e43a5aa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "683140172a7679e6427c3a547c92337ba25b1e8a2e2ada3c80c9d927e43a5aa2", kill_on_drop: false }`
[INFO] [stdout] 683140172a7679e6427c3a547c92337ba25b1e8a2e2ada3c80c9d927e43a5aa2