[INFO] cloning repository https://github.com/prajwalprabhu/data_structure
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/prajwalprabhu/data_structure" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprajwalprabhu%2Fdata_structure", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprajwalprabhu%2Fdata_structure'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d8a253e672afd5b6e8ab406ef01b539a2795dcfc
[INFO] checking prajwalprabhu/data_structure against try#d8a5ee01b913730aca7ab44c72c8f2722c0533ff for pr-139022
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprajwalprabhu%2Fdata_structure" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prajwalprabhu/data_structure on toolchain d8a5ee01b913730aca7ab44c72c8f2722c0533ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/prajwalprabhu/data_structure
[INFO] finished tweaking git repo https://github.com/prajwalprabhu/data_structure
[INFO] tweaked toml for git repo https://github.com/prajwalprabhu/data_structure written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/prajwalprabhu/data_structure 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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 711dcf54f4ab371cf3b8f15b8fdfdc1f2199786e278418fce8cfd6bddf903817
[INFO] running `Command { std: "docker" "start" "-a" "711dcf54f4ab371cf3b8f15b8fdfdc1f2199786e278418fce8cfd6bddf903817", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "711dcf54f4ab371cf3b8f15b8fdfdc1f2199786e278418fce8cfd6bddf903817", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "711dcf54f4ab371cf3b8f15b8fdfdc1f2199786e278418fce8cfd6bddf903817", kill_on_drop: false }`
[INFO] [stdout] 711dcf54f4ab371cf3b8f15b8fdfdc1f2199786e278418fce8cfd6bddf903817
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7a44697a93fcc564ec427741b9a5c91b9843dfb853f3c64a573b50d77fcfae2
[INFO] running `Command { std: "docker" "start" "-a" "a7a44697a93fcc564ec427741b9a5c91b9843dfb853f3c64a573b50d77fcfae2", kill_on_drop: false }`
[INFO] [stderr]     Checking datastructure v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `eval` is never used
[INFO] [stdout]  --> src/infix2.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn eval(eq: String) -> u32 {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]  --> src/infix2.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn check(eq: String) {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_result` is never used
[INFO] [stdout]   --> src/infix2.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn to_result(result: Vec<String>) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `power` is never used
[INFO] [stdout]   --> src/infix2.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn power(mut eq: Vec<String>) -> Vec<String> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_vec` is never used
[INFO] [stdout]    --> src/infix2.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn to_vec(eq: String) -> Vec<String> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_post` is never used
[INFO] [stdout]    --> src/infix2.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn to_post(eq: Vec<String>) -> Vec<String> {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "a7a44697a93fcc564ec427741b9a5c91b9843dfb853f3c64a573b50d77fcfae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7a44697a93fcc564ec427741b9a5c91b9843dfb853f3c64a573b50d77fcfae2", kill_on_drop: false }`
[INFO] [stdout] a7a44697a93fcc564ec427741b9a5c91b9843dfb853f3c64a573b50d77fcfae2