[INFO] crate min-max-heap 1.2.2 is already in cache
[INFO] extracting crate min-max-heap 1.2.2 into work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/reg/min-max-heap/1.2.2
[INFO] extracting crate min-max-heap 1.2.2 into work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/reg/min-max-heap/1.2.2
[INFO] validating manifest of min-max-heap-1.2.2 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 min-max-heap-1.2.2 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 min-max-heap-1.2.2
[INFO] finished frobbing min-max-heap-1.2.2
[INFO] frobbed toml for min-max-heap-1.2.2 written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/reg/min-max-heap/1.2.2/Cargo.toml
[INFO] started frobbing min-max-heap-1.2.2
[INFO] finished frobbing min-max-heap-1.2.2
[INFO] frobbed toml for min-max-heap-1.2.2 written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/reg/min-max-heap/1.2.2/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 min-max-heap-1.2.2 against master#efe2f32a6b8217425f361ec7c206910c611c03ee for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-5/master#efe2f32a6b8217425f361ec7c206910c611c03ee:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/reg/min-max-heap/1.2.2:/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" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b7fde9289a303059e879d804cb0a44ed4fb3b0539f61ff6b20e03800de845969
[INFO] running `"docker" "start" "-a" "b7fde9289a303059e879d804cb0a44ed4fb3b0539f61ff6b20e03800de845969"`
[INFO] [stderr]     Checking min-max-heap v1.2.2 (/opt/crater/workdir)
[INFO] [stderr]     Checking quickcheck v0.7.2
[INFO] [stderr] warning: the item `FromIterator` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:659:13
[INFO] [stderr]     |
[INFO] [stderr] 589 |     use super::*;
[INFO] [stderr]     |         -------- the item `FromIterator` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 659 |         use std::iter::FromIterator;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.70s
[INFO] running `"docker" "inspect" "b7fde9289a303059e879d804cb0a44ed4fb3b0539f61ff6b20e03800de845969"`
[INFO] running `"docker" "rm" "-f" "b7fde9289a303059e879d804cb0a44ed4fb3b0539f61ff6b20e03800de845969"`
[INFO] [stdout] b7fde9289a303059e879d804cb0a44ed4fb3b0539f61ff6b20e03800de845969