[INFO] cloning repository https://github.com/hk-pG/rust-lang-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hk-pG/rust-lang-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhk-pG%2Frust-lang-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhk-pG%2Frust-lang-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b1282df188c1d28d9b699e55ddad564e9fbac72
[INFO] checking hk-pG/rust-lang-tutorial against try#3ec2a775459d36c7d90654e47c56ff7bb0d542ab for pr-139087
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhk-pG%2Frust-lang-tutorial" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hk-pG/rust-lang-tutorial on toolchain 3ec2a775459d36c7d90654e47c56ff7bb0d542ab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hk-pG/rust-lang-tutorial
[INFO] finished tweaking git repo https://github.com/hk-pG/rust-lang-tutorial
[INFO] tweaked toml for git repo https://github.com/hk-pG/rust-lang-tutorial written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/hk-pG/rust-lang-tutorial 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" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e2aeda7f27d9a1b1c8d39996bb6d7963f8118ccb4bfb0f4ba3640a0466951f2
[INFO] running `Command { std: "docker" "start" "-a" "6e2aeda7f27d9a1b1c8d39996bb6d7963f8118ccb4bfb0f4ba3640a0466951f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e2aeda7f27d9a1b1c8d39996bb6d7963f8118ccb4bfb0f4ba3640a0466951f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e2aeda7f27d9a1b1c8d39996bb6d7963f8118ccb4bfb0f4ba3640a0466951f2", kill_on_drop: false }`
[INFO] [stdout] 6e2aeda7f27d9a1b1c8d39996bb6d7963f8118ccb4bfb0f4ba3640a0466951f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b280d40cdc44200c568d7dbf9f8fbb193878c7268bab2bc534767cb02b7ad091
[INFO] running `Command { std: "docker" "start" "-a" "b280d40cdc44200c568d7dbf9f8fbb193878c7268bab2bc534767cb02b7ad091", kill_on_drop: false }`
[INFO] [stderr]     Checking fib v0.1.0 (/opt/rustwide/workdir/fib)
[INFO] [stderr]     Checking rust-lang-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `basic_indexes` is never used
[INFO] [stdout]   --> src/main.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn basic_indexes() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterate_collect` is never used
[INFO] [stdout]   --> src/main.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn iterate_collect() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterate_loop` is never used
[INFO] [stdout]   --> src/main.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn iterate_loop() {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_slice` is never used
[INFO] [stdout]   --> src/main.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn use_slice() {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "b280d40cdc44200c568d7dbf9f8fbb193878c7268bab2bc534767cb02b7ad091", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b280d40cdc44200c568d7dbf9f8fbb193878c7268bab2bc534767cb02b7ad091", kill_on_drop: false }`
[INFO] [stdout] b280d40cdc44200c568d7dbf9f8fbb193878c7268bab2bc534767cb02b7ad091