[INFO] crate kt 0.0.7 is already in cache
[INFO] extracting crate kt 0.0.7 into work/ex/beta-1.37-6/sources/1.36.0/reg/kt/0.0.7
[INFO] extracting crate kt 0.0.7 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/kt/0.0.7
[INFO] validating manifest of kt-0.0.7 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kt-0.0.7 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kt-0.0.7
[INFO] finished frobbing kt-0.0.7
[INFO] frobbed toml for kt-0.0.7 written to work/ex/beta-1.37-6/sources/1.36.0/reg/kt/0.0.7/Cargo.toml
[INFO] started frobbing kt-0.0.7
[INFO] finished frobbing kt-0.0.7
[INFO] frobbed toml for kt-0.0.7 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/kt/0.0.7/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing kt-0.0.7 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/kt/0.0.7:/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] ea67e018cc8919bbb75dd9d9ac462a408098eaea1d41338308bae88333f19705
[INFO] running `"docker" "start" "-a" "ea67e018cc8919bbb75dd9d9ac462a408098eaea1d41338308bae88333f19705"`
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]    Compiling kt v0.0.7 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/kt.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 7  | use std::io::prelude::*;
[INFO] [stderr]    |     ------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 55 |             use std::io::Write;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.31s
[INFO] running `"docker" "inspect" "ea67e018cc8919bbb75dd9d9ac462a408098eaea1d41338308bae88333f19705"`
[INFO] running `"docker" "rm" "-f" "ea67e018cc8919bbb75dd9d9ac462a408098eaea1d41338308bae88333f19705"`
[INFO] [stdout] ea67e018cc8919bbb75dd9d9ac462a408098eaea1d41338308bae88333f19705
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/kt/0.0.7:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0b93c8e35d27701e6d076412e5e7b7bc66a218dfcb2822efa8d69cb3023b9039
[INFO] running `"docker" "start" "-a" "0b93c8e35d27701e6d076412e5e7b7bc66a218dfcb2822efa8d69cb3023b9039"`
[INFO] [stderr]    Compiling kt v0.0.7 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/kt.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 7  | use std::io::prelude::*;
[INFO] [stderr]    |     ------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 55 |             use std::io::Write;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "0b93c8e35d27701e6d076412e5e7b7bc66a218dfcb2822efa8d69cb3023b9039"`
[INFO] running `"docker" "rm" "-f" "0b93c8e35d27701e6d076412e5e7b7bc66a218dfcb2822efa8d69cb3023b9039"`
[INFO] [stdout] 0b93c8e35d27701e6d076412e5e7b7bc66a218dfcb2822efa8d69cb3023b9039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/kt/0.0.7:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] ccef2d6d2705183cead939459e72552264eeb197519ed44c62ccb4635619d106
[INFO] running `"docker" "start" "-a" "ccef2d6d2705183cead939459e72552264eeb197519ed44c62ccb4635619d106"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/kt-5bc583845433c4f6
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ccef2d6d2705183cead939459e72552264eeb197519ed44c62ccb4635619d106"`
[INFO] running `"docker" "rm" "-f" "ccef2d6d2705183cead939459e72552264eeb197519ed44c62ccb4635619d106"`
[INFO] [stdout] ccef2d6d2705183cead939459e72552264eeb197519ed44c62ccb4635619d106