[INFO] cloning repository https://github.com/croom-m/Sorting-algorithms-with-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/croom-m/Sorting-algorithms-with-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcroom-m%2FSorting-algorithms-with-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcroom-m%2FSorting-algorithms-with-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 956350ce959c83f07e7ebc324332bbe39fd29a56
[INFO] building croom-m/Sorting-algorithms-with-Rust against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcroom-m%2FSorting-algorithms-with-Rust" "/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/croom-m/Sorting-algorithms-with-Rust on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/croom-m/Sorting-algorithms-with-Rust
[INFO] finished tweaking git repo https://github.com/croom-m/Sorting-algorithms-with-Rust
[INFO] tweaked toml for git repo https://github.com/croom-m/Sorting-algorithms-with-Rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/croom-m/Sorting-algorithms-with-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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 609a672d37d376591e0b4599271b2777e189b6bfa2fcc18f87a3f96333a6b7d5
[INFO] running `Command { std: "docker" "start" "-a" "609a672d37d376591e0b4599271b2777e189b6bfa2fcc18f87a3f96333a6b7d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "609a672d37d376591e0b4599271b2777e189b6bfa2fcc18f87a3f96333a6b7d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "609a672d37d376591e0b4599271b2777e189b6bfa2fcc18f87a3f96333a6b7d5", kill_on_drop: false }`
[INFO] [stdout] 609a672d37d376591e0b4599271b2777e189b6bfa2fcc18f87a3f96333a6b7d5
[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=warn" "-e" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe1660a78941a7970cff61b8b1a11ca2989c030e147ee1dd5544d5bf7b6bec07
[INFO] running `Command { std: "docker" "start" "-a" "fe1660a78941a7970cff61b8b1a11ca2989c030e147ee1dd5544d5bf7b6bec07", kill_on_drop: false }`
[INFO] [stderr]    Compiling my-project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `buble_sort` is never used
[INFO] [stdout]  --> src/buble_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn buble_sort(arr: &mut [i32]) {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insertion_sort` is never used
[INFO] [stdout]  --> src/insertion_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn insertion_sort(arr: &mut [i32]) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_sort` is never used
[INFO] [stdout]  --> src/merge_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn merge_sort(arr: &mut [i32]) {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge` is never used
[INFO] [stdout]  --> src/merge_sort.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn merge(arr: &mut [i32], l: usize, m: usize, r: usize) {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_sort_helper` is never used
[INFO] [stdout]   --> src/merge_sort.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn merge_sort_helper(arr: &mut [i32], l: usize, r: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `selection_sort` is never used
[INFO] [stdout]  --> src/selection_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn selection_sort(a: &mut [i32]) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "fe1660a78941a7970cff61b8b1a11ca2989c030e147ee1dd5544d5bf7b6bec07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe1660a78941a7970cff61b8b1a11ca2989c030e147ee1dd5544d5bf7b6bec07", kill_on_drop: false }`
[INFO] [stdout] fe1660a78941a7970cff61b8b1a11ca2989c030e147ee1dd5544d5bf7b6bec07
[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=warn" "-e" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93d6d6e27af512c6aed724a50f1fa6af6f49ce0036f86731d15fb08a6b623498
[INFO] running `Command { std: "docker" "start" "-a" "93d6d6e27af512c6aed724a50f1fa6af6f49ce0036f86731d15fb08a6b623498", kill_on_drop: false }`
[INFO] [stderr]    Compiling my-project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `buble_sort` is never used
[INFO] [stdout]  --> src/buble_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn buble_sort(arr: &mut [i32]) {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `insertion_sort` is never used
[INFO] [stdout]  --> src/insertion_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn insertion_sort(arr: &mut [i32]) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_sort` is never used
[INFO] [stdout]  --> src/merge_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn merge_sort(arr: &mut [i32]) {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge` is never used
[INFO] [stdout]  --> src/merge_sort.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn merge(arr: &mut [i32], l: usize, m: usize, r: usize) {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_sort_helper` is never used
[INFO] [stdout]   --> src/merge_sort.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn merge_sort_helper(arr: &mut [i32], l: usize, r: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `selection_sort` is never used
[INFO] [stdout]  --> src/selection_sort.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn selection_sort(a: &mut [i32]) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "93d6d6e27af512c6aed724a50f1fa6af6f49ce0036f86731d15fb08a6b623498", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93d6d6e27af512c6aed724a50f1fa6af6f49ce0036f86731d15fb08a6b623498", kill_on_drop: false }`
[INFO] [stdout] 93d6d6e27af512c6aed724a50f1fa6af6f49ce0036f86731d15fb08a6b623498