[INFO] cloning repository https://github.com/sabyabhoi/diff_stacker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sabyabhoi/diff_stacker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabyabhoi%2Fdiff_stacker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabyabhoi%2Fdiff_stacker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c15912f6e0250ea0efe9916cdb42e8c9034db713
[INFO] checking sabyabhoi/diff_stacker against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsabyabhoi%2Fdiff_stacker" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sabyabhoi/diff_stacker
[INFO] finished tweaking git repo https://github.com/sabyabhoi/diff_stacker
[INFO] tweaked toml for git repo https://github.com/sabyabhoi/diff_stacker written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sabyabhoi/diff_stacker on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sabyabhoi/diff_stacker 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-error v0.2.0
[INFO] [stderr]   Downloaded libc v0.2.162
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ab540b60319c4c0582042a8f6d93fdd1cf218961b132bdf09d4e0170a4e0f45
[INFO] running `Command { std: "docker" "start" "-a" "4ab540b60319c4c0582042a8f6d93fdd1cf218961b132bdf09d4e0170a4e0f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ab540b60319c4c0582042a8f6d93fdd1cf218961b132bdf09d4e0170a4e0f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ab540b60319c4c0582042a8f6d93fdd1cf218961b132bdf09d4e0170a4e0f45", kill_on_drop: false }`
[INFO] [stdout] 4ab540b60319c4c0582042a8f6d93fdd1cf218961b132bdf09d4e0170a4e0f45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3083d251238a9ce5957167ada3f73576ee7bed3a26c238e20d718addfa19d5fe
[INFO] running `Command { std: "docker" "start" "-a" "3083d251238a9ce5957167ada3f73576ee7bed3a26c238e20d718addfa19d5fe", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.20.2
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking pin-project-lite v0.2.15
[INFO] [stderr]    Compiling libc v0.2.162
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling cc v1.2.1
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking miniz_oxide v0.7.4
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking tracing-error v0.2.0
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking color-spantrace v0.2.1
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking color-eyre v0.6.3
[INFO] [stderr]     Checking diff_stacker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `get_branches` is never used
[INFO] [stdout]  --> src/git.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn get_branches() -> Result<Vec<(String, Option<String>)>> {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_branches` is never used
[INFO] [stdout]  --> src/git.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn get_branches() -> Result<Vec<(String, Option<String>)>> {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_new_stacked_branch` is never used
[INFO] [stdout]   --> src/git.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn create_new_stacked_branch(s: &String) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_new_stacked_branch` is never used
[INFO] [stdout]   --> src/git.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn create_new_stacked_branch(s: &String) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Graph` is never constructed
[INFO] [stdout]  --> src/graph.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Graph {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_edges` and `dfs_recursive` are never used
[INFO] [stdout]   --> src/graph.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Graph {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn from_edges(edges: &Vec<(String, Option<String>)>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn dfs_recursive(
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.93s
[INFO] running `Command { std: "docker" "inspect" "3083d251238a9ce5957167ada3f73576ee7bed3a26c238e20d718addfa19d5fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3083d251238a9ce5957167ada3f73576ee7bed3a26c238e20d718addfa19d5fe", kill_on_drop: false }`
[INFO] [stdout] 3083d251238a9ce5957167ada3f73576ee7bed3a26c238e20d718addfa19d5fe