[INFO] fetching crate contracts 0.3.0...
[INFO] extracting crate contracts 0.3.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/contracts/0.3.0
[INFO] extracting crate contracts 0.3.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/contracts/0.3.0
[INFO] validating manifest of contracts-0.3.0 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 contracts-0.3.0 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 contracts-0.3.0
[INFO] finished frobbing contracts-0.3.0
[INFO] frobbed toml for contracts-0.3.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/contracts/0.3.0/Cargo.toml
[INFO] started frobbing contracts-0.3.0
[INFO] finished frobbing contracts-0.3.0
[INFO] frobbed toml for contracts-0.3.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/contracts/0.3.0/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing contracts-0.3.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/contracts/0.3.0:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 23c61f96e471034741b347fde8a90b5b1e4f50e127eb5d06b94713b1a9a674fb
[INFO] running `"docker" "start" "-a" "23c61f96e471034741b347fde8a90b5b1e4f50e127eb5d06b94713b1a9a674fb"`
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling contracts v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.49s
[INFO] running `"docker" "inspect" "23c61f96e471034741b347fde8a90b5b1e4f50e127eb5d06b94713b1a9a674fb"`
[INFO] running `"docker" "rm" "-f" "23c61f96e471034741b347fde8a90b5b1e4f50e127eb5d06b94713b1a9a674fb"`
[INFO] [stdout] 23c61f96e471034741b347fde8a90b5b1e4f50e127eb5d06b94713b1a9a674fb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/contracts/0.3.0:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] f0a6f3ce44a0be325105f2db17a3fb2457721718765049b1014723e20c0f788a
[INFO] running `"docker" "start" "-a" "f0a6f3ce44a0be325105f2db17a3fb2457721718765049b1014723e20c0f788a"`
[INFO] [stderr]    Compiling quickcheck_macros v0.8.0
[INFO] [stderr]    Compiling contracts v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.16s
[INFO] running `"docker" "inspect" "f0a6f3ce44a0be325105f2db17a3fb2457721718765049b1014723e20c0f788a"`
[INFO] running `"docker" "rm" "-f" "f0a6f3ce44a0be325105f2db17a3fb2457721718765049b1014723e20c0f788a"`
[INFO] [stdout] f0a6f3ce44a0be325105f2db17a3fb2457721718765049b1014723e20c0f788a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/contracts/0.3.0:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 4253bc8d339cb132f87e51927cdac6d2f9671bce45acc5f297c7c17d254c8ff7
[INFO] running `"docker" "start" "-a" "4253bc8d339cb132f87e51927cdac6d2f9671bce45acc5f297c7c17d254c8ff7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/contracts-f7e38ae62aac80db
[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] [stderr]      Running /opt/crater/target/debug/deps/functions-37bd6770bfa2b354
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_a_thing ... ok
[INFO] [stdout] test test_invariant ... ok
[INFO] [stdout] test test_sort ... ok
[INFO] [stdout] test test_early_return ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/methods-931501e78c6cb218
[INFO] [stdout] running 2 tests
[INFO] [stdout] test impl_invariant ... ok
[INFO] [stdout] test methods ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/old-299ba2a8d0e731f9
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_old_nested ... ok
[INFO] [stdout] test test_old_simple ... ok
[INFO] [stdout] test test_violation ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ranged_int-3a5b70274563f819
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test ranged_int_add ... ok
[INFO] [stdout] test ranged_int_add_reassign ... ok
[INFO] [stdout] test construction_underflow ... ok
[INFO] [stdout] test construction_overflow ... ok
[INFO] [stdout] test ranged_overflow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/traits-5d97b29e5f86bd21
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test adder_example ... ok
[INFO] [stderr]    Doc-tests contracts
[INFO] [stdout] test interpolate_example ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - contract_trait (line 216) ... ok
[INFO] [stdout] test src/lib.rs -  (line 22) ... ok
[INFO] [stdout] test src/lib.rs - post (line 106) ... ok
[INFO] [stdout] test src/lib.rs - pre (line 57) ... ok
[INFO] [stdout] test src/lib.rs - invariant (line 145) ... ok
[INFO] [stdout] test src/lib.rs - post (line 98) ... ok
[INFO] [stdout] test src/lib.rs - invariant (line 156) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4253bc8d339cb132f87e51927cdac6d2f9671bce45acc5f297c7c17d254c8ff7"`
[INFO] running `"docker" "rm" "-f" "4253bc8d339cb132f87e51927cdac6d2f9671bce45acc5f297c7c17d254c8ff7"`
[INFO] [stdout] 4253bc8d339cb132f87e51927cdac6d2f9671bce45acc5f297c7c17d254c8ff7