[INFO] cloning repository https://github.com/Voultapher/sort-string-vec-as-numbers-
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Voultapher/sort-string-vec-as-numbers-" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoultapher%2Fsort-string-vec-as-numbers-", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoultapher%2Fsort-string-vec-as-numbers-'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 344488d54389b739ae47ae26bbd499a97ead9bea
[INFO] testing Voultapher/sort-string-vec-as-numbers- against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoultapher%2Fsort-string-vec-as-numbers-" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Voultapher/sort-string-vec-as-numbers- on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Voultapher/sort-string-vec-as-numbers-
[INFO] finished tweaking git repo https://github.com/Voultapher/sort-string-vec-as-numbers-
[INFO] tweaked toml for git repo https://github.com/Voultapher/sort-string-vec-as-numbers- written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Voultapher/sort-string-vec-as-numbers- already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", 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] 86ad071339ca8c39835f7ff72205506d5f195d8c41d0f38930cbb1b52749ae20
[INFO] running `Command { std: "docker" "start" "-a" "86ad071339ca8c39835f7ff72205506d5f195d8c41d0f38930cbb1b52749ae20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86ad071339ca8c39835f7ff72205506d5f195d8c41d0f38930cbb1b52749ae20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86ad071339ca8c39835f7ff72205506d5f195d8c41d0f38930cbb1b52749ae20", kill_on_drop: false }`
[INFO] [stdout] 86ad071339ca8c39835f7ff72205506d5f195d8c41d0f38930cbb1b52749ae20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", 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] 73a34b2c5006e0edb59c79bb80bc2b77059a5b63590c20b95ead1abe9b3e52a9
[INFO] running `Command { std: "docker" "start" "-a" "73a34b2c5006e0edb59c79bb80bc2b77059a5b63590c20b95ead1abe9b3e52a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling sort-string-vec-as-numbers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `make_string_vec`
[INFO] [stdout]  --> src/main.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn make_string_vec(len: usize) -> Vec<String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sort_by_key`
[INFO] [stdout]   --> src/main.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn sort_by_key(vec: &mut Vec<String>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sort_by_cached_key`
[INFO] [stdout]   --> src/main.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn sort_by_cached_key(vec: &mut Vec<String>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_then_sort`
[INFO] [stdout]   --> src/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn parse_then_sort(input: &[String]) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sort-string-vec-as-numbers` due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "73a34b2c5006e0edb59c79bb80bc2b77059a5b63590c20b95ead1abe9b3e52a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73a34b2c5006e0edb59c79bb80bc2b77059a5b63590c20b95ead1abe9b3e52a9", kill_on_drop: false }`
[INFO] [stdout] 73a34b2c5006e0edb59c79bb80bc2b77059a5b63590c20b95ead1abe9b3e52a9