[INFO] crate classreader 0.2.1 is already in cache
[INFO] extracting crate classreader 0.2.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/classreader/0.2.1
[INFO] extracting crate classreader 0.2.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/classreader/0.2.1
[INFO] validating manifest of classreader-0.2.1 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 classreader-0.2.1 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 classreader-0.2.1
[INFO] finished frobbing classreader-0.2.1
[INFO] frobbed toml for classreader-0.2.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/classreader/0.2.1/Cargo.toml
[INFO] started frobbing classreader-0.2.1
[INFO] finished frobbing classreader-0.2.1
[INFO] frobbed toml for classreader-0.2.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/classreader/0.2.1/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 classreader-0.2.1 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-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/classreader/0.2.1:/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] 9a0efaff9d0ddd6983127088dd593cfd45297dba48b7a2ce459a0dc348cc6e22
[INFO] running `"docker" "start" "-a" "9a0efaff9d0ddd6983127088dd593cfd45297dba48b7a2ce459a0dc348cc6e22"`
[INFO] [stderr]    Compiling classreader v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/lib.rs:163:25
[INFO] [stderr]     |
[INFO] [stderr] 163 |                         _ => panic!("unknown frame type {}", frame_type) // impossible
[INFO] [stderr]     |                         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.68s
[INFO] running `"docker" "inspect" "9a0efaff9d0ddd6983127088dd593cfd45297dba48b7a2ce459a0dc348cc6e22"`
[INFO] running `"docker" "rm" "-f" "9a0efaff9d0ddd6983127088dd593cfd45297dba48b7a2ce459a0dc348cc6e22"`
[INFO] [stdout] 9a0efaff9d0ddd6983127088dd593cfd45297dba48b7a2ce459a0dc348cc6e22
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/classreader/0.2.1:/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] a128b9c011751221b22e534c3ad03f3f1ab9d78be713eb404f7624faa5573dda
[INFO] running `"docker" "start" "-a" "a128b9c011751221b22e534c3ad03f3f1ab9d78be713eb404f7624faa5573dda"`
[INFO] [stderr]    Compiling classreader v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/lib.rs:163:25
[INFO] [stderr]     |
[INFO] [stderr] 163 |                         _ => panic!("unknown frame type {}", frame_type) // impossible
[INFO] [stderr]     |                         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `"docker" "inspect" "a128b9c011751221b22e534c3ad03f3f1ab9d78be713eb404f7624faa5573dda"`
[INFO] running `"docker" "rm" "-f" "a128b9c011751221b22e534c3ad03f3f1ab9d78be713eb404f7624faa5573dda"`
[INFO] [stdout] a128b9c011751221b22e534c3ad03f3f1ab9d78be713eb404f7624faa5573dda
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/classreader/0.2.1:/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] a41f9aaa1e5d288ff234a300a0c2370d463145e93b03a69ab69d1495de4f92e2
[INFO] running `"docker" "start" "-a" "a41f9aaa1e5d288ff234a300a0c2370d463145e93b03a69ab69d1495de4f92e2"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/classreader-dc81f1557d92451c
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tests-93d262485ea6d59e
[INFO] [stderr]    Doc-tests classreader
[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 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 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" "a41f9aaa1e5d288ff234a300a0c2370d463145e93b03a69ab69d1495de4f92e2"`
[INFO] running `"docker" "rm" "-f" "a41f9aaa1e5d288ff234a300a0c2370d463145e93b03a69ab69d1495de4f92e2"`
[INFO] [stdout] a41f9aaa1e5d288ff234a300a0c2370d463145e93b03a69ab69d1495de4f92e2