[INFO] crate binary-tree 0.2.0 is already in cache
[INFO] extracting crate binary-tree 0.2.0 into work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/reg/binary-tree/0.2.0
[INFO] extracting crate binary-tree 0.2.0 into work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/reg/binary-tree/0.2.0
[INFO] validating manifest of binary-tree-0.2.0 on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of binary-tree-0.2.0 on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing binary-tree-0.2.0
[INFO] finished frobbing binary-tree-0.2.0
[INFO] frobbed toml for binary-tree-0.2.0 written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/reg/binary-tree/0.2.0/Cargo.toml
[INFO] started frobbing binary-tree-0.2.0
[INFO] finished frobbing binary-tree-0.2.0
[INFO] frobbed toml for binary-tree-0.2.0 written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/reg/binary-tree/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking binary-tree-0.2.0 against try#78b0bd8441ef961f6475e3d47fe3bca38cb83432 for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-4/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/reg/binary-tree/0.2.0:/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" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ef7e26f5d7e0885d295b5cdded9034d93eb1fcb8e6c68bf38e568638dec2e3e2
[INFO] running `"docker" "start" "-a" "ef7e26f5d7e0885d295b5cdded9034d93eb1fcb8e6c68bf38e568638dec2e3e2"`
[INFO] [stderr]     Checking binary-tree v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> benches/from_iter.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         (0..TOTAL).collect::<CountTree<_>>();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> benches/from_iter.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         (0..TOTAL).collect::<LinkedList<_>>();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> benches/from_iter.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |         (0..TOTAL).collect::<Vec<_>>();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `"docker" "inspect" "ef7e26f5d7e0885d295b5cdded9034d93eb1fcb8e6c68bf38e568638dec2e3e2"`
[INFO] running `"docker" "rm" "-f" "ef7e26f5d7e0885d295b5cdded9034d93eb1fcb8e6c68bf38e568638dec2e3e2"`
[INFO] [stdout] ef7e26f5d7e0885d295b5cdded9034d93eb1fcb8e6c68bf38e568638dec2e3e2