[INFO] crate crc64 1.0.0 is already in cache
[INFO] extracting crate crc64 1.0.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/crc64/1.0.0
[INFO] extracting crate crc64 1.0.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/crc64/1.0.0
[INFO] validating manifest of crc64-1.0.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of crc64-1.0.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing crc64-1.0.0
[INFO] finished frobbing crc64-1.0.0
[INFO] frobbed toml for crc64-1.0.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/crc64/1.0.0/Cargo.toml
[INFO] started frobbing crc64-1.0.0
[INFO] finished frobbing crc64-1.0.0
[INFO] frobbed toml for crc64-1.0.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/crc64/1.0.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing crc64-1.0.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/crc64/1.0.0:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 3fdd8ba25bde40f5a872f12642cad1a3613569dcbacac592f0b86c4b5b1bf82f
[INFO] running `"docker" "start" "-a" "3fdd8ba25bde40f5a872f12642cad1a3613569dcbacac592f0b86c4b5b1bf82f"`
[INFO] [stderr]    Compiling crc64 v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `crc64::crc64`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crc64::crc64;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "3fdd8ba25bde40f5a872f12642cad1a3613569dcbacac592f0b86c4b5b1bf82f"`
[INFO] running `"docker" "rm" "-f" "3fdd8ba25bde40f5a872f12642cad1a3613569dcbacac592f0b86c4b5b1bf82f"`
[INFO] [stdout] 3fdd8ba25bde40f5a872f12642cad1a3613569dcbacac592f0b86c4b5b1bf82f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/crc64/1.0.0:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] affd9596d9850b811a229b586b99a66b241299c97134df160215eecb4cba0212
[INFO] running `"docker" "start" "-a" "affd9596d9850b811a229b586b99a66b241299c97134df160215eecb4cba0212"`
[INFO] [stderr]    Compiling crc64 v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `crc64::crc64`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crc64::crc64;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "affd9596d9850b811a229b586b99a66b241299c97134df160215eecb4cba0212"`
[INFO] running `"docker" "rm" "-f" "affd9596d9850b811a229b586b99a66b241299c97134df160215eecb4cba0212"`
[INFO] [stdout] affd9596d9850b811a229b586b99a66b241299c97134df160215eecb4cba0212
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/crc64/1.0.0:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 9da4a1c5e96334a1d5037e51b9985d28318454b68de206eaa7694507ba7c526e
[INFO] running `"docker" "start" "-a" "9da4a1c5e96334a1d5037e51b9985d28318454b68de206eaa7694507ba7c526e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/crc64-e163d2758ffb0925
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_crc64_works ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/crc64-9007284bf234daff
[INFO] [stdout] test test_crc64_write ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests crc64
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 20) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9da4a1c5e96334a1d5037e51b9985d28318454b68de206eaa7694507ba7c526e"`
[INFO] running `"docker" "rm" "-f" "9da4a1c5e96334a1d5037e51b9985d28318454b68de206eaa7694507ba7c526e"`
[INFO] [stdout] 9da4a1c5e96334a1d5037e51b9985d28318454b68de206eaa7694507ba7c526e