Dec 19 19:52:14.625 INFO checking bielr/biotrees-rs against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:52:14.625 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/bielr/biotrees-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 19:52:15.120 INFO [stdout] e09f1b51c959a80c0e4b805c49d87f876383a78238ed1bf80f25ebf3d5e433be
Dec 19 19:52:15.123 INFO running `"docker" "start" "-a" "e09f1b51c959a80c0e4b805c49d87f876383a78238ed1bf80f25ebf3d5e433be"`
Dec 19 19:52:16.524 INFO [stderr]     Checking lock_api v0.1.5
Dec 19 19:52:16.532 INFO [stderr]     Checking crossbeam-epoch v0.3.1
Dec 19 19:52:17.288 INFO [stderr]     Checking parking_lot v0.6.4
Dec 19 19:52:17.892 INFO [stderr]     Checking crossbeam-deque v0.2.0
Dec 19 19:52:18.191 INFO [stderr]     Checking once_cell v0.1.6
Dec 19 19:52:18.629 INFO [stderr]     Checking rayon-core v1.4.1
Dec 19 19:52:18.883 INFO [stderr]     Checking cached v0.8.0
Dec 19 19:52:19.988 INFO [stderr]     Checking rayon v1.0.3
Dec 19 19:52:23.667 INFO [stderr]     Checking biotrees v0.1.0 (/opt/crater/workdir)
Dec 19 19:52:25.544 INFO [stderr] warning: function is never used: `sym_desc_half`
Dec 19 19:52:25.544 INFO [stderr]   --> examples/enum_balance.rs:10:1
Dec 19 19:52:25.544 INFO [stderr]    |
Dec 19 19:52:25.544 INFO [stderr] 10 | fn sym_desc_half(t: &Shape) -> u32 {
Dec 19 19:52:25.544 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:52:25.544 INFO [stderr]    |
Dec 19 19:52:25.544 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 19:52:25.544 INFO [stderr] 
Dec 19 19:52:25.544 INFO [stderr] warning: function is never used: `sym_desc`
Dec 19 19:52:25.544 INFO [stderr]   --> examples/enum_balance.rs:29:1
Dec 19 19:52:25.544 INFO [stderr]    |
Dec 19 19:52:25.544 INFO [stderr] 29 | fn sym_desc(t: &Shape) -> u32 {
Dec 19 19:52:25.544 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:52:25.545 INFO [stderr] 
Dec 19 19:52:25.545 INFO [stderr] warning: function is never used: `depth_avg`
Dec 19 19:52:25.545 INFO [stderr]   --> examples/enum_balance.rs:48:1
Dec 19 19:52:25.545 INFO [stderr]    |
Dec 19 19:52:25.545 INFO [stderr] 48 | fn depth_avg<T>(t: &Phylo<T>) -> f64 {
Dec 19 19:52:25.545 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:52:25.545 INFO [stderr] 
Dec 19 19:52:25.545 INFO [stderr] warning: function is never used: `depth_var`
Dec 19 19:52:25.545 INFO [stderr]   --> examples/enum_balance.rs:55:1
Dec 19 19:52:25.545 INFO [stderr]    |
Dec 19 19:52:25.545 INFO [stderr] 55 | fn depth_var<T>(t: &Phylo<T>) -> f64 {
Dec 19 19:52:25.545 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:52:25.545 INFO [stderr] 
Dec 19 19:52:25.580 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.13s
Dec 19 19:52:25.986 INFO running `"docker" "inspect" "e09f1b51c959a80c0e4b805c49d87f876383a78238ed1bf80f25ebf3d5e433be"`
Dec 19 19:52:26.082 INFO running `"docker" "rm" "-f" "e09f1b51c959a80c0e4b805c49d87f876383a78238ed1bf80f25ebf3d5e433be"`
Dec 19 19:52:26.316 INFO [stdout] e09f1b51c959a80c0e4b805c49d87f876383a78238ed1bf80f25ebf3d5e433be