[INFO] cloning repository ccqpein/random_choice
[INFO] running `"git" "clone" "--bare" "git://github.com/ccqpein/random_choice.git" "work/cache/sources/gh/ccqpein/random_choice"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/ccqpein/random_choice'...
[INFO] running `"git" "clone" "work/cache/sources/gh/ccqpein/random_choice" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/ccqpein/random_choice"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/ccqpein/random_choice'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ccqpein/random_choice" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/ccqpein/random_choice"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/ccqpein/random_choice'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8b223064ca792feed5217b86dc4d3281a05ba75c
[INFO] sha for GitHub repo ccqpein/random_choice: 8b223064ca792feed5217b86dc4d3281a05ba75c
[INFO] validating manifest of ccqpein/random_choice on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ccqpein/random_choice on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ccqpein/random_choice
[INFO] finished frobbing ccqpein/random_choice
[INFO] frobbed toml for ccqpein/random_choice written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/ccqpein/random_choice/Cargo.toml
[INFO] started frobbing ccqpein/random_choice
[INFO] finished frobbing ccqpein/random_choice
[INFO] frobbed toml for ccqpein/random_choice written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/ccqpein/random_choice/Cargo.toml
[INFO] crate ccqpein/random_choice has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ccqpein/random_choice against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-2/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/ccqpein/random_choice:/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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8fdaab16cac18ccd3670113749697ba8642ebd802024a202a4f47e9d0c9704ca
[INFO] running `"docker" "start" "-a" "8fdaab16cac18ccd3670113749697ba8642ebd802024a202a4f47e9d0c9704ca"`
[INFO] [stderr]    Compiling serde v1.0.56
[INFO] [stderr]    Compiling serde_derive v1.0.56
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]     Checking random_choice v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.87s
[INFO] running `"docker" "inspect" "8fdaab16cac18ccd3670113749697ba8642ebd802024a202a4f47e9d0c9704ca"`
[INFO] running `"docker" "rm" "-f" "8fdaab16cac18ccd3670113749697ba8642ebd802024a202a4f47e9d0c9704ca"`
[INFO] [stdout] 8fdaab16cac18ccd3670113749697ba8642ebd802024a202a4f47e9d0c9704ca