[INFO] updating cached repository tomc1998/rust-lmc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tomc1998/rust-lmc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tomc1998/rust-lmc" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/tomc1998/rust-lmc"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/tomc1998/rust-lmc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tomc1998/rust-lmc" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/tomc1998/rust-lmc"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/tomc1998/rust-lmc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1827800f48ac1edaac36c7b39df35029b129508a
[INFO] sha for GitHub repo tomc1998/rust-lmc: 1827800f48ac1edaac36c7b39df35029b129508a
[INFO] validating manifest of tomc1998/rust-lmc on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tomc1998/rust-lmc on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tomc1998/rust-lmc
[INFO] finished frobbing tomc1998/rust-lmc
[INFO] frobbed toml for tomc1998/rust-lmc written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/tomc1998/rust-lmc/Cargo.toml
[INFO] started frobbing tomc1998/rust-lmc
[INFO] finished frobbing tomc1998/rust-lmc
[INFO] frobbed toml for tomc1998/rust-lmc written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/tomc1998/rust-lmc/Cargo.toml
[INFO] crate tomc1998/rust-lmc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tomc1998/rust-lmc against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-6/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/tomc1998/rust-lmc:/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f74c7ca4f8a8afe7c747fdd6926582ce18b318933f7f02b6f3594e99b671cee2
[INFO] running `"docker" "start" "-a" "f74c7ca4f8a8afe7c747fdd6926582ce18b318933f7f02b6f3594e99b671cee2"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking lmc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `io` is imported redundantly
[INFO] [stderr]   --> src/io.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 1  | use std::io::{self, Read};
[INFO] [stderr]    |               ---- the item `io` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 14 |     use std::io;
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `io` is imported redundantly
[INFO] [stderr]   --> src/io.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 1  | use std::io::{self, Read};
[INFO] [stderr]    |               ---- the item `io` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 14 |     use std::io;
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `"docker" "inspect" "f74c7ca4f8a8afe7c747fdd6926582ce18b318933f7f02b6f3594e99b671cee2"`
[INFO] running `"docker" "rm" "-f" "f74c7ca4f8a8afe7c747fdd6926582ce18b318933f7f02b6f3594e99b671cee2"`
[INFO] [stdout] f74c7ca4f8a8afe7c747fdd6926582ce18b318933f7f02b6f3594e99b671cee2