[INFO] cloning repository https://github.com/brunohoppe/rust_proj
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brunohoppe/rust_proj" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrunohoppe%2Frust_proj", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrunohoppe%2Frust_proj'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f31a4a2d149db3c611407d04d991ad61e79e8f1c
[INFO] checking brunohoppe/rust_proj against master#64b185eddaa1d7ddf5e0c024be23b9cbba6c1722 for pr-143929
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrunohoppe%2Frust_proj" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/brunohoppe/rust_proj
[INFO] finished tweaking git repo https://github.com/brunohoppe/rust_proj
[INFO] tweaked toml for git repo https://github.com/brunohoppe/rust_proj written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/brunohoppe/rust_proj on toolchain 64b185eddaa1d7ddf5e0c024be23b9cbba6c1722
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/brunohoppe/rust_proj 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" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded int-enum v0.4.0
[INFO] [stderr]   Downloaded int-enum-impl v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 85da5eeab3cbf1422bc3686eae7839c2cdb84838a6a6e1092ce631eee4c73800
[INFO] running `Command { std: "docker" "start" "-a" "85da5eeab3cbf1422bc3686eae7839c2cdb84838a6a6e1092ce631eee4c73800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85da5eeab3cbf1422bc3686eae7839c2cdb84838a6a6e1092ce631eee4c73800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85da5eeab3cbf1422bc3686eae7839c2cdb84838a6a6e1092ce631eee4c73800", kill_on_drop: false }`
[INFO] [stdout] 85da5eeab3cbf1422bc3686eae7839c2cdb84838a6a6e1092ce631eee4c73800
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 140c3fb9f6374fa0b0e4e03b765cba704484b7fcef071d53b9ed3b8ec9ae2e00
[INFO] running `Command { std: "docker" "start" "-a" "140c3fb9f6374fa0b0e4e03b765cba704484b7fcef071d53b9ed3b8ec9ae2e00", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking num_threads v0.1.3
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking time v0.3.7
[INFO] [stderr]    Compiling enum-iterator-derive v0.7.0
[INFO] [stderr]     Checking enum-iterator v0.7.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling int-enum-impl v0.4.0
[INFO] [stderr]     Checking int-enum v0.4.0
[INFO] [stderr]     Checking nft_rush v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `make_vec` is never used
[INFO] [stdout]   --> src/train.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn make_vec() -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_vec` is never used
[INFO] [stdout]   --> src/train.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn print_vec(vec: Vec<i32>) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo` is never used
[INFO] [stdout]   --> src/train.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn foo(name: String) -> String{
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bar` is never used
[INFO] [stdout]   --> src/train.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn bar(name: &String) {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change` is never used
[INFO] [stdout]   --> src/train.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn change(some_string: &mut String) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_vec` is never used
[INFO] [stdout]   --> src/train.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn make_vec() -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_vec` is never used
[INFO] [stdout]   --> src/train.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn print_vec(vec: Vec<i32>) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `foo` is never used
[INFO] [stdout]   --> src/train.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn foo(name: String) -> String{
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bar` is never used
[INFO] [stdout]   --> src/train.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn bar(name: &String) {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change` is never used
[INFO] [stdout]   --> src/train.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn change(some_string: &mut String) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.79s
[INFO] running `Command { std: "docker" "inspect" "140c3fb9f6374fa0b0e4e03b765cba704484b7fcef071d53b9ed3b8ec9ae2e00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "140c3fb9f6374fa0b0e4e03b765cba704484b7fcef071d53b9ed3b8ec9ae2e00", kill_on_drop: false }`
[INFO] [stdout] 140c3fb9f6374fa0b0e4e03b765cba704484b7fcef071d53b9ed3b8ec9ae2e00