[INFO] updating cached repository yoatnic/til-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yoatnic/til-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yoatnic/til-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/yoatnic/til-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/yoatnic/til-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yoatnic/til-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yoatnic/til-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yoatnic/til-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c2be59a4617cd5a0dea22852b890471baac9c006
[INFO] sha for GitHub repo yoatnic/til-rust: c2be59a4617cd5a0dea22852b890471baac9c006
[INFO] validating manifest of yoatnic/til-rust 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 yoatnic/til-rust 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 yoatnic/til-rust
[INFO] finished frobbing yoatnic/til-rust
[INFO] frobbed toml for yoatnic/til-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/yoatnic/til-rust/Cargo.toml
[INFO] started frobbing yoatnic/til-rust
[INFO] finished frobbing yoatnic/til-rust
[INFO] frobbed toml for yoatnic/til-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yoatnic/til-rust/Cargo.toml
[INFO] crate yoatnic/til-rust already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing yoatnic/til-rust 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-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yoatnic/til-rust:/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] 247e4ebcd7048ea0f2af5be4cb0a1940e6d4740815ac06b311e50c7d108e1751
[INFO] running `"docker" "start" "-a" "247e4ebcd7048ea0f2af5be4cb0a1940e6d4740815ac06b311e50c7d108e1751"`
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `kind`
[INFO] [stderr]  --> src/enum_example.rs:7:3
[INFO] [stderr]   |
[INFO] [stderr] 7 |   kind: IpAddrKind,
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.07s
[INFO] running `"docker" "inspect" "247e4ebcd7048ea0f2af5be4cb0a1940e6d4740815ac06b311e50c7d108e1751"`
[INFO] running `"docker" "rm" "-f" "247e4ebcd7048ea0f2af5be4cb0a1940e6d4740815ac06b311e50c7d108e1751"`
[INFO] [stdout] 247e4ebcd7048ea0f2af5be4cb0a1940e6d4740815ac06b311e50c7d108e1751
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yoatnic/til-rust:/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] f3ace9cafaaabb77177a52a574063754654c7c0d66e664e7452de36fbb3de25c
[INFO] running `"docker" "start" "-a" "f3ace9cafaaabb77177a52a574063754654c7c0d66e664e7452de36fbb3de25c"`
[INFO] [stderr]    Compiling playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `kind`
[INFO] [stderr]  --> src/enum_example.rs:7:3
[INFO] [stderr]   |
[INFO] [stderr] 7 |   kind: IpAddrKind,
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "f3ace9cafaaabb77177a52a574063754654c7c0d66e664e7452de36fbb3de25c"`
[INFO] running `"docker" "rm" "-f" "f3ace9cafaaabb77177a52a574063754654c7c0d66e664e7452de36fbb3de25c"`
[INFO] [stdout] f3ace9cafaaabb77177a52a574063754654c7c0d66e664e7452de36fbb3de25c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yoatnic/til-rust:/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] 567e4fbd68eca92b1db294296afc819f6ac45d6609430ffd641886912ae6a455
[INFO] running `"docker" "start" "-a" "567e4fbd68eca92b1db294296afc819f6ac45d6609430ffd641886912ae6a455"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/playground-b56b24294bca3755
[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] [stderr]      Running /opt/crater/target/debug/deps/playground-f80e0453cd4b08bb
[INFO] [stderr]    Doc-tests playground
[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" "567e4fbd68eca92b1db294296afc819f6ac45d6609430ffd641886912ae6a455"`
[INFO] running `"docker" "rm" "-f" "567e4fbd68eca92b1db294296afc819f6ac45d6609430ffd641886912ae6a455"`
[INFO] [stdout] 567e4fbd68eca92b1db294296afc819f6ac45d6609430ffd641886912ae6a455