[INFO] crate cascade 0.1.3 is already in cache
[INFO] extracting crate cascade 0.1.3 into work/ex/beta-1.37-6/sources/1.36.0/reg/cascade/0.1.3
[INFO] extracting crate cascade 0.1.3 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cascade/0.1.3
[INFO] validating manifest of cascade-0.1.3 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 cascade-0.1.3 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 cascade-0.1.3
[INFO] finished frobbing cascade-0.1.3
[INFO] frobbed toml for cascade-0.1.3 written to work/ex/beta-1.37-6/sources/1.36.0/reg/cascade/0.1.3/Cargo.toml
[INFO] started frobbing cascade-0.1.3
[INFO] finished frobbing cascade-0.1.3
[INFO] frobbed toml for cascade-0.1.3 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cascade/0.1.3/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 cascade-0.1.3 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/cascade/0.1.3:/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] eb2b1eaff43a902df47e07c65ca6f1ef42338be7f9a26726cf58f7e0e8259209
[INFO] running `"docker" "start" "-a" "eb2b1eaff43a902df47e07c65ca6f1ef42338be7f9a26726cf58f7e0e8259209"`
[INFO] [stderr]    Compiling cascade v0.1.3 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `"docker" "inspect" "eb2b1eaff43a902df47e07c65ca6f1ef42338be7f9a26726cf58f7e0e8259209"`
[INFO] running `"docker" "rm" "-f" "eb2b1eaff43a902df47e07c65ca6f1ef42338be7f9a26726cf58f7e0e8259209"`
[INFO] [stdout] eb2b1eaff43a902df47e07c65ca6f1ef42338be7f9a26726cf58f7e0e8259209
[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/cascade/0.1.3:/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] f7410751c49221a33f43604c0f7cf49f35069106e561580692154807004e83a7
[INFO] running `"docker" "start" "-a" "f7410751c49221a33f43604c0f7cf49f35069106e561580692154807004e83a7"`
[INFO] [stderr]    Compiling cascade v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `method_chain_example`
[INFO] [stderr]   --> examples/basic_cascades.rs:87:7
[INFO] [stderr]    |
[INFO] [stderr] 87 |   let method_chain_example = cascade! {
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_method_chain_example`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/basic_cascades.rs:93:3
[INFO] [stderr]    |
[INFO] [stderr] 93 |   option_cascade_test();
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "f7410751c49221a33f43604c0f7cf49f35069106e561580692154807004e83a7"`
[INFO] running `"docker" "rm" "-f" "f7410751c49221a33f43604c0f7cf49f35069106e561580692154807004e83a7"`
[INFO] [stdout] f7410751c49221a33f43604c0f7cf49f35069106e561580692154807004e83a7
[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/cascade/0.1.3:/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] 786f8233cc1ad5a346a0d71b8cef921303b325e62ee5c6d527500bc35a25ef5c
[INFO] running `"docker" "start" "-a" "786f8233cc1ad5a346a0d71b8cef921303b325e62ee5c6d527500bc35a25ef5c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cascade-f2ea5f7046548dcb
[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]    Doc-tests cascade
[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" "786f8233cc1ad5a346a0d71b8cef921303b325e62ee5c6d527500bc35a25ef5c"`
[INFO] running `"docker" "rm" "-f" "786f8233cc1ad5a346a0d71b8cef921303b325e62ee5c6d527500bc35a25ef5c"`
[INFO] [stdout] 786f8233cc1ad5a346a0d71b8cef921303b325e62ee5c6d527500bc35a25ef5c