[INFO] cloning repository https://github.com/shunsukef/rust_train
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shunsukef/rust_train" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunsukef%2Frust_train", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunsukef%2Frust_train'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23721343fb0495c4853c30fab44b811c6c3ad7ed
[INFO] testing shunsukef/rust_train against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshunsukef%2Frust_train" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shunsukef/rust_train on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shunsukef/rust_train
[INFO] finished tweaking git repo https://github.com/shunsukef/rust_train
[INFO] tweaked toml for git repo https://github.com/shunsukef/rust_train written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/shunsukef/rust_train already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e9fce32cea5d0ef4da6a7b8c9dbf5f84fd1b74fac65a862f47c5a581c09ff0d
[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" "3e9fce32cea5d0ef4da6a7b8c9dbf5f84fd1b74fac65a862f47c5a581c09ff0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e9fce32cea5d0ef4da6a7b8c9dbf5f84fd1b74fac65a862f47c5a581c09ff0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e9fce32cea5d0ef4da6a7b8c9dbf5f84fd1b74fac65a862f47c5a581c09ff0d", kill_on_drop: false }`
[INFO] [stdout] 3e9fce32cea5d0ef4da6a7b8c9dbf5f84fd1b74fac65a862f47c5a581c09ff0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 858477db7155ddbc6aac9ac3324142dcfaa14aedd6ed6c118a2f0f73ce40ca22
[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" "858477db7155ddbc6aac9ac3324142dcfaa14aedd6ed6c118a2f0f73ce40ca22", kill_on_drop: false }`
[INFO] [stderr]    Compiling train v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `buffer_io`
[INFO] [stdout]   --> src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn buffer_io() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `string_io`
[INFO] [stdout]   --> src/main.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn string_io() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `copy_io`
[INFO] [stdout]    --> src/main.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn copy_io() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "858477db7155ddbc6aac9ac3324142dcfaa14aedd6ed6c118a2f0f73ce40ca22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "858477db7155ddbc6aac9ac3324142dcfaa14aedd6ed6c118a2f0f73ce40ca22", kill_on_drop: false }`
[INFO] [stdout] 858477db7155ddbc6aac9ac3324142dcfaa14aedd6ed6c118a2f0f73ce40ca22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4229eab673380ec6f8459f291de854efd7c34f71ccdb5b058a8ef4126048876c
[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" "4229eab673380ec6f8459f291de854efd7c34f71ccdb5b058a8ef4126048876c", kill_on_drop: false }`
[INFO] [stderr]    Compiling train v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `buffer_io`
[INFO] [stdout]   --> src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn buffer_io() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `string_io`
[INFO] [stdout]   --> src/main.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn string_io() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `copy_io`
[INFO] [stdout]    --> src/main.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn copy_io() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "4229eab673380ec6f8459f291de854efd7c34f71ccdb5b058a8ef4126048876c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4229eab673380ec6f8459f291de854efd7c34f71ccdb5b058a8ef4126048876c", kill_on_drop: false }`
[INFO] [stdout] 4229eab673380ec6f8459f291de854efd7c34f71ccdb5b058a8ef4126048876c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 21c06193d9e058d7109124619fe8ef423e9f5dd09610a6a1d1e9bc484a476bed
[INFO] running `Command { std: "docker" "start" "-a" "21c06193d9e058d7109124619fe8ef423e9f5dd09610a6a1d1e9bc484a476bed", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `buffer_io`
[INFO] [stderr]   --> src/main.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn buffer_io() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string_io`
[INFO] [stderr]   --> src/main.rs:50:4
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn string_io() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `copy_io`
[INFO] [stderr]    --> src/main.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn copy_io() {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `train` (bin "train" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/train-538437765c1bd084)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "21c06193d9e058d7109124619fe8ef423e9f5dd09610a6a1d1e9bc484a476bed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21c06193d9e058d7109124619fe8ef423e9f5dd09610a6a1d1e9bc484a476bed", kill_on_drop: false }`
[INFO] [stdout] 21c06193d9e058d7109124619fe8ef423e9f5dd09610a6a1d1e9bc484a476bed