[INFO] cloning repository https://github.com/shivaram19/learnin-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shivaram19/learnin-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshivaram19%2Flearnin-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshivaram19%2Flearnin-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb2c2a32afd4cbace4214487f687efe24c604632
[INFO] checking shivaram19/learnin-rust against try#579169d0e78824dc60934e5eb74cd3841f2b33e8 for pr-149328
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshivaram19%2Flearnin-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/shivaram19/learnin-rust
[INFO] finished tweaking git repo https://github.com/shivaram19/learnin-rust
[INFO] tweaked toml for git repo https://github.com/shivaram19/learnin-rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/shivaram19/learnin-rust on toolchain 579169d0e78824dc60934e5eb74cd3841f2b33e8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+579169d0e78824dc60934e5eb74cd3841f2b33e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/shivaram19/learnin-rust 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" "+579169d0e78824dc60934e5eb74cd3841f2b33e8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+579169d0e78824dc60934e5eb74cd3841f2b33e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e78f13711d462c714095d70d919d2f0a3c0e9529ce05f2834eaf091aae39295f
[INFO] running `Command { std: "docker" "start" "-a" "e78f13711d462c714095d70d919d2f0a3c0e9529ce05f2834eaf091aae39295f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e78f13711d462c714095d70d919d2f0a3c0e9529ce05f2834eaf091aae39295f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e78f13711d462c714095d70d919d2f0a3c0e9529ce05f2834eaf091aae39295f", kill_on_drop: false }`
[INFO] [stdout] e78f13711d462c714095d70d919d2f0a3c0e9529ce05f2834eaf091aae39295f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+579169d0e78824dc60934e5eb74cd3841f2b33e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e57ec48020f9e88339b73803fb3676f40c4fcf71bc243f41b442c178d81daed
[INFO] running `Command { std: "docker" "start" "-a" "9e57ec48020f9e88339b73803fb3676f40c4fcf71bc243f41b442c178d81daed", kill_on_drop: false }`
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking learnin-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `longest`
[INFO] [stdout]   --> src/main.rs:97:7
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let longest = bigger_string(&string2, &srtinging);
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_longest`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/main.rs:58:2
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Hakuna<'a> {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 58 |     name: &'a str 
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hakuna` is never used
[INFO] [stdout]   --> src/main.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 61 | impl<'a>  Hakuna<'a>{
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 62 |     fn hakuna(&self) -> &'a str{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `longest`
[INFO] [stdout]   --> src/main.rs:97:7
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let longest = bigger_string(&string2, &srtinging);
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_longest`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/main.rs:58:2
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Hakuna<'a> {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 58 |     name: &'a str 
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hakuna` is never used
[INFO] [stdout]   --> src/main.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 61 | impl<'a>  Hakuna<'a>{
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 62 |     fn hakuna(&self) -> &'a str{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "9e57ec48020f9e88339b73803fb3676f40c4fcf71bc243f41b442c178d81daed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e57ec48020f9e88339b73803fb3676f40c4fcf71bc243f41b442c178d81daed", kill_on_drop: false }`
[INFO] [stdout] 9e57ec48020f9e88339b73803fb3676f40c4fcf71bc243f41b442c178d81daed