[INFO] fetching crate slip21 0.1.0...
[INFO] extracting crate slip21 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/slip21/0.1.0
[INFO] extracting crate slip21 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/slip21/0.1.0
[INFO] validating manifest of slip21-0.1.0 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 slip21-0.1.0 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 slip21-0.1.0
[INFO] finished frobbing slip21-0.1.0
[INFO] frobbed toml for slip21-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/reg/slip21/0.1.0/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitcoin_hashes v0.6.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing slip21-0.1.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 23ba0f75869559e888756a9d0f8581b2228d330b0e68f7f5ae92f1aaf7791a66
[INFO] running `"docker" "start" "-a" "23ba0f75869559e888756a9d0f8581b2228d330b0e68f7f5ae92f1aaf7791a66"`
[INFO] [stderr]    Compiling serde v1.0.98
[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 34.49s
[INFO] running `"docker" "inspect" "23ba0f75869559e888756a9d0f8581b2228d330b0e68f7f5ae92f1aaf7791a66"`
[INFO] running `"docker" "rm" "-f" "23ba0f75869559e888756a9d0f8581b2228d330b0e68f7f5ae92f1aaf7791a66"`
[INFO] [stdout] 23ba0f75869559e888756a9d0f8581b2228d330b0e68f7f5ae92f1aaf7791a66
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2a751a69375756b8eaba00caefba10a5d12364e41276ebb2db4806bfb8a164af
[INFO] running `"docker" "start" "-a" "2a751a69375756b8eaba00caefba10a5d12364e41276ebb2db4806bfb8a164af"`
[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 0.66s
[INFO] running `"docker" "inspect" "2a751a69375756b8eaba00caefba10a5d12364e41276ebb2db4806bfb8a164af"`
[INFO] running `"docker" "rm" "-f" "2a751a69375756b8eaba00caefba10a5d12364e41276ebb2db4806bfb8a164af"`
[INFO] [stdout] 2a751a69375756b8eaba00caefba10a5d12364e41276ebb2db4806bfb8a164af
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 4c7041c9623164240178f01178cc44fe275fe430a1f80ef5a72da9c92b5f6f20
[INFO] running `"docker" "start" "-a" "4c7041c9623164240178f01178cc44fe275fe430a1f80ef5a72da9c92b5f6f20"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/slip21-c71c93997a0a97c4
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::slip_example ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests slip21
[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" "4c7041c9623164240178f01178cc44fe275fe430a1f80ef5a72da9c92b5f6f20"`
[INFO] running `"docker" "rm" "-f" "4c7041c9623164240178f01178cc44fe275fe430a1f80ef5a72da9c92b5f6f20"`
[INFO] [stdout] 4c7041c9623164240178f01178cc44fe275fe430a1f80ef5a72da9c92b5f6f20