[INFO] crate slip21 0.1.0 is already in cache
[INFO] extracting crate slip21 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/slip21/0.1.0
[INFO] extracting crate slip21 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/slip21/0.1.0
[INFO] validating manifest of slip21-0.1.0 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 slip21-0.1.0 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 slip21-0.1.0
[INFO] finished frobbing slip21-0.1.0
[INFO] frobbed toml for slip21-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/slip21/0.1.0/Cargo.toml
[INFO] started frobbing slip21-0.1.0
[INFO] finished frobbing slip21-0.1.0
[INFO] frobbed toml for slip21-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/slip21/0.1.0/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] [stderr]     Blocking waiting for file lock on package cache
[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 slip21-0.1.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/slip21/0.1.0:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] f60d1dcd4631e41e673e82f370aa1dd756299f908a75c487746d15b9a4760261
[INFO] running `"docker" "start" "-a" "f60d1dcd4631e41e673e82f370aa1dd756299f908a75c487746d15b9a4760261"`
[INFO] [stderr]    Compiling bitcoin_hashes v0.6.0
[INFO] [stderr]    Compiling slip21 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `fmt`
[INFO] [stderr]  --> src/lib.rs:7:16
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::{cmp, fmt, hash};
[INFO] [stderr]   |                ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.39s
[INFO] running `"docker" "inspect" "f60d1dcd4631e41e673e82f370aa1dd756299f908a75c487746d15b9a4760261"`
[INFO] running `"docker" "rm" "-f" "f60d1dcd4631e41e673e82f370aa1dd756299f908a75c487746d15b9a4760261"`
[INFO] [stdout] f60d1dcd4631e41e673e82f370aa1dd756299f908a75c487746d15b9a4760261
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/slip21/0.1.0:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a9cb94e270d5d5542b54c41a4349b5f4a3756a6e62281ecf5f0fe64adcb07abe
[INFO] running `"docker" "start" "-a" "a9cb94e270d5d5542b54c41a4349b5f4a3756a6e62281ecf5f0fe64adcb07abe"`
[INFO] [stderr]    Compiling slip21 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `fmt`
[INFO] [stderr]  --> src/lib.rs:7:16
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::{cmp, fmt, hash};
[INFO] [stderr]   |                ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "a9cb94e270d5d5542b54c41a4349b5f4a3756a6e62281ecf5f0fe64adcb07abe"`
[INFO] running `"docker" "rm" "-f" "a9cb94e270d5d5542b54c41a4349b5f4a3756a6e62281ecf5f0fe64adcb07abe"`
[INFO] [stdout] a9cb94e270d5d5542b54c41a4349b5f4a3756a6e62281ecf5f0fe64adcb07abe
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/slip21/0.1.0:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] b245449b0e662a25660380a2cb70602f438d0a4749a0b71b07b3e210f2837fe3
[INFO] running `"docker" "start" "-a" "b245449b0e662a25660380a2cb70602f438d0a4749a0b71b07b3e210f2837fe3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/slip21-6b144b0f7d9f9ee7
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::slip_example ... ok
[INFO] [stderr]    Doc-tests slip21
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "b245449b0e662a25660380a2cb70602f438d0a4749a0b71b07b3e210f2837fe3"`
[INFO] running `"docker" "rm" "-f" "b245449b0e662a25660380a2cb70602f438d0a4749a0b71b07b3e210f2837fe3"`
[INFO] [stdout] b245449b0e662a25660380a2cb70602f438d0a4749a0b71b07b3e210f2837fe3