[INFO] crate stronghold 0.2.1 is already in cache
[INFO] extracting crate stronghold 0.2.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/stronghold/0.2.1
[INFO] extracting crate stronghold 0.2.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/stronghold/0.2.1
[INFO] validating manifest of stronghold-0.2.1 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 stronghold-0.2.1 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 stronghold-0.2.1
[INFO] finished frobbing stronghold-0.2.1
[INFO] frobbed toml for stronghold-0.2.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/stronghold/0.2.1/Cargo.toml
[INFO] started frobbing stronghold-0.2.1
[INFO] finished frobbing stronghold-0.2.1
[INFO] frobbed toml for stronghold-0.2.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/stronghold/0.2.1/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] 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] testing stronghold-0.2.1 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/stronghold/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 94b3f53a7003314cc01291eea01890bd148e9d18765bae0454e43bd7dc5e26d4
[INFO] running `"docker" "start" "-a" "94b3f53a7003314cc01291eea01890bd148e9d18765bae0454e43bd7dc5e26d4"`
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling podio v0.1.6
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling miniz_oxide v0.3.2
[INFO] [stderr]    Compiling flate2 v1.0.11
[INFO] [stderr]    Compiling zip v0.5.3
[INFO] [stderr]    Compiling stronghold v0.2.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.37s
[INFO] running `"docker" "inspect" "94b3f53a7003314cc01291eea01890bd148e9d18765bae0454e43bd7dc5e26d4"`
[INFO] running `"docker" "rm" "-f" "94b3f53a7003314cc01291eea01890bd148e9d18765bae0454e43bd7dc5e26d4"`
[INFO] [stdout] 94b3f53a7003314cc01291eea01890bd148e9d18765bae0454e43bd7dc5e26d4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/stronghold/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6b8206b5f6a96eee1a875280586edebf88b1b96dce0a02c17275a9a828d6cdf1
[INFO] running `"docker" "start" "-a" "6b8206b5f6a96eee1a875280586edebf88b1b96dce0a02c17275a9a828d6cdf1"`
[INFO] [stderr]    Compiling stronghold v0.2.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "6b8206b5f6a96eee1a875280586edebf88b1b96dce0a02c17275a9a828d6cdf1"`
[INFO] running `"docker" "rm" "-f" "6b8206b5f6a96eee1a875280586edebf88b1b96dce0a02c17275a9a828d6cdf1"`
[INFO] [stdout] 6b8206b5f6a96eee1a875280586edebf88b1b96dce0a02c17275a9a828d6cdf1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/stronghold/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 3d6f6999f3b3e8ae16d7a6262671859955432270829805b7de6e3b71d1b7882b
[INFO] running `"docker" "start" "-a" "3d6f6999f3b3e8ae16d7a6262671859955432270829805b7de6e3b71d1b7882b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/stronghold-5701e94baed78718
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... 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 stronghold
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 16) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs -  (line 16) stdout ----
[INFO] [stdout] error[E0463]: can't find crate for `serde_derive`
[INFO] [stdout]  --> src/lib.rs:19:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate serde_derive;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs -  (line 16)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "3d6f6999f3b3e8ae16d7a6262671859955432270829805b7de6e3b71d1b7882b"`
[INFO] running `"docker" "rm" "-f" "3d6f6999f3b3e8ae16d7a6262671859955432270829805b7de6e3b71d1b7882b"`
[INFO] [stdout] 3d6f6999f3b3e8ae16d7a6262671859955432270829805b7de6e3b71d1b7882b