[INFO] fetching crate crates-mirror 0.2.1...
[INFO] extracting crate crates-mirror 0.2.1 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/crates-mirror/0.2.1
[INFO] extracting crate crates-mirror 0.2.1 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/crates-mirror/0.2.1
[INFO] validating manifest of crates-mirror-0.2.1 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of crates-mirror-0.2.1 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing crates-mirror-0.2.1
[INFO] finished frobbing crates-mirror-0.2.1
[INFO] frobbed toml for crates-mirror-0.2.1 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/crates-mirror/0.2.1/Cargo.toml
[INFO] started frobbing crates-mirror-0.2.1
[INFO] finished frobbing crates-mirror-0.2.1
[INFO] frobbed toml for crates-mirror-0.2.1 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/crates-mirror/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded digest-buffer v0.1.2
[INFO] [stderr]   Downloaded sha2 v0.2.0
[INFO] [stderr]   Downloaded digest v0.2.1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing crates-mirror-0.2.1 against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-3/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/crates-mirror/0.2.1:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] a6526c4b7d9bb9744cf2e88a7c1d045b58e41a1d1a070f5db0499dc23eae0cff
[INFO] running `"docker" "start" "-a" "a6526c4b7d9bb9744cf2e88a7c1d045b58e41a1d1a070f5db0499dc23eae0cff"`
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling byte-tools v0.1.3
[INFO] [stderr]    Compiling modifier v0.1.0
[INFO] [stderr]    Compiling route-recognizer v0.1.12
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling error v0.1.9
[INFO] [stderr]    Compiling conduit-mime-types v0.7.3
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]    Compiling cookie v0.2.5
[INFO] [stderr]    Compiling curl v0.4.22
[INFO] [stderr]    Compiling libgit2-sys v0.6.19
[INFO] [stderr]    Compiling generic-array v0.5.1
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling plugin v0.2.6
[INFO] [stderr]    Compiling digest-buffer v0.1.2
[INFO] [stderr]    Compiling digest v0.2.1
[INFO] [stderr]    Compiling sha2 v0.2.0
[INFO] [stderr]    Compiling git2 v0.6.11
[INFO] [stderr]    Compiling hyper v0.9.18
[INFO] [stderr]    Compiling iron v0.4.0
[INFO] [stderr]    Compiling router v0.4.0
[INFO] [stderr]    Compiling crates-mirror v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] error: the item `File` is imported redundantly
[INFO] [stderr]   --> src/main.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 25 | use std::fs::{create_dir_all, File};
[INFO] [stderr]    |                               ---- the item `File` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 70 |         use std::fs::File;
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 | #![deny(warnings)]
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    = note: #[deny(unused_imports)] implied by #[deny(warnings)]
[INFO] [stderr] 
[INFO] [stderr] error: the item `Read` is imported redundantly
[INFO] [stderr]   --> src/main.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 26 | use std::io::{BufWriter, Write, Read, BufReader, BufRead};
[INFO] [stderr]    |                                 ---- the item `Read` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 71 |         use std::io::Read;
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `crates-mirror`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a6526c4b7d9bb9744cf2e88a7c1d045b58e41a1d1a070f5db0499dc23eae0cff"`
[INFO] running `"docker" "rm" "-f" "a6526c4b7d9bb9744cf2e88a7c1d045b58e41a1d1a070f5db0499dc23eae0cff"`
[INFO] [stdout] a6526c4b7d9bb9744cf2e88a7c1d045b58e41a1d1a070f5db0499dc23eae0cff