[INFO] cloning repository https://github.com/tamanobi/rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tamanobi/rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamanobi%2Frust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamanobi%2Frust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71e2d57323497439e16836e3bcc080d9472a9fa5
[INFO] testing tamanobi/rust-practice against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftamanobi%2Frust-practice" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tamanobi/rust-practice
[INFO] finished tweaking git repo https://github.com/tamanobi/rust-practice
[INFO] tweaked toml for git repo https://github.com/tamanobi/rust-practice written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tamanobi/rust-practice on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tamanobi/rust-practice 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2dbd335d4f81b435aa19222b426c470ff9fde166286f678e886367827951bd6b
[INFO] running `Command { std: "docker" "start" "-a" "2dbd335d4f81b435aa19222b426c470ff9fde166286f678e886367827951bd6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dbd335d4f81b435aa19222b426c470ff9fde166286f678e886367827951bd6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dbd335d4f81b435aa19222b426c470ff9fde166286f678e886367827951bd6b", kill_on_drop: false }`
[INFO] [stdout] 2dbd335d4f81b435aa19222b426c470ff9fde166286f678e886367827951bd6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0692f601047b6a88af0974b4ce489497f3418eead0c0d317f164b74a12484dec
[INFO] running `Command { std: "docker" "start" "-a" "0692f601047b6a88af0974b4ce489497f3418eead0c0d317f164b74a12484dec", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello-cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `perform` is never used
[INFO] [stdout]  --> src/fruit_basket.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn perform() -> HashMap<String, u32> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `perform` is never used
[INFO] [stdout]  --> src/indexing_tuple.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn perform() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `perform` is never used
[INFO] [stdout]  --> src/read_file_content.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn perform(path: PathBuf) -> Result<String, Error> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Counter` is never constructed
[INFO] [stdout]  --> src/iter.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Counter {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/iter.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl Counter {
[INFO] [stdout]   | ------------ associated function in this implementation
[INFO] [stdout] 8 |     pub fn new(length: usize) -> Counter {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "0692f601047b6a88af0974b4ce489497f3418eead0c0d317f164b74a12484dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0692f601047b6a88af0974b4ce489497f3418eead0c0d317f164b74a12484dec", kill_on_drop: false }`
[INFO] [stdout] 0692f601047b6a88af0974b4ce489497f3418eead0c0d317f164b74a12484dec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2133f7063a00ce533fc0477931b216ef7546cc44ad6f4ebd8a8a1ab72e7979f0
[INFO] running `Command { std: "docker" "start" "-a" "2133f7063a00ce533fc0477931b216ef7546cc44ad6f4ebd8a8a1ab72e7979f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello-cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `perform` is never used
[INFO] [stdout]  --> src/fruit_basket.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn perform() -> HashMap<String, u32> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `perform` is never used
[INFO] [stdout]  --> src/indexing_tuple.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn perform() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "2133f7063a00ce533fc0477931b216ef7546cc44ad6f4ebd8a8a1ab72e7979f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2133f7063a00ce533fc0477931b216ef7546cc44ad6f4ebd8a8a1ab72e7979f0", kill_on_drop: false }`
[INFO] [stdout] 2133f7063a00ce533fc0477931b216ef7546cc44ad6f4ebd8a8a1ab72e7979f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 142c140a6e7c4acd119ea8858d72b6def7df380326828a9c22b0f538935f970e
[INFO] running `Command { std: "docker" "start" "-a" "142c140a6e7c4acd119ea8858d72b6def7df380326828a9c22b0f538935f970e", kill_on_drop: false }`
[INFO] [stderr] warning: function `perform` is never used
[INFO] [stderr]  --> src/fruit_basket.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn perform() -> HashMap<String, u32> {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `perform` is never used
[INFO] [stderr]  --> src/indexing_tuple.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn perform() {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `hello-cargo` (bin "hello-cargo" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/hello_cargo-ef927894f27a66b3)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::implement_iter ... ok
[INFO] [stdout] test tests::any_type ... ok
[INFO] [stdout] test tests::iter ... ok
[INFO] [stdout] test tests::read_file_content ... ok
[INFO] [stdout] test tests::exploration ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "142c140a6e7c4acd119ea8858d72b6def7df380326828a9c22b0f538935f970e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "142c140a6e7c4acd119ea8858d72b6def7df380326828a9c22b0f538935f970e", kill_on_drop: false }`
[INFO] [stdout] 142c140a6e7c4acd119ea8858d72b6def7df380326828a9c22b0f538935f970e