[INFO] cloning repository https://github.com/tuzz/supermutation
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tuzz/supermutation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Fsupermutation"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Fsupermutation'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eafbd87c5cb2e3c1926035910f6f21323a976f03
[INFO] checking tuzz/supermutation against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftuzz%2Fsupermutation" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tuzz/supermutation on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tuzz/supermutation
[INFO] finished tweaking git repo https://github.com/tuzz/supermutation
[INFO] tweaked toml for git repo https://github.com/tuzz/supermutation written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/tuzz/supermutation already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2803baa2dce2e3d032db0f381aca682963dd0e13304cd5bab31d56b16ab940b8
[INFO] running `"docker" "start" "-a" "2803baa2dce2e3d032db0f381aca682963dd0e13304cd5bab31d56b16ab940b8"`
[INFO] [stderr]     Checking lehmer v3.0.0
[INFO] [stderr]     Checking bucket_queue v2.0.0
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling clang-sys v0.23.0
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling cexpr v0.2.3
[INFO] [stderr]    Compiling bindgen v0.37.4
[INFO] [stderr]    Compiling croaring-sys v0.3.7
[INFO] [stderr]     Checking croaring v0.3.7
[INFO] [stderr]     Checking supermutation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/closed_set/mod.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/open_set/mod.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `maximum_f_cost`
[INFO] [stderr]   --> src/open_set/mod.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn maximum_f_cost(&self) -> Option<usize> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `open_set_len`
[INFO] [stderr]   --> src/search/mod.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn open_set_len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `closed_set_len`
[INFO] [stderr]   --> src/search/mod.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn closed_set_len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `uniform_paths` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(uniform_paths)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `uniform_paths` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(uniform_paths)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 04s
[INFO] running `"docker" "inspect" "2803baa2dce2e3d032db0f381aca682963dd0e13304cd5bab31d56b16ab940b8"`
[INFO] running `"docker" "rm" "-f" "2803baa2dce2e3d032db0f381aca682963dd0e13304cd5bab31d56b16ab940b8"`
[INFO] [stdout] 2803baa2dce2e3d032db0f381aca682963dd0e13304cd5bab31d56b16ab940b8