[INFO] updating cached repository steveklabnik/echo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/steveklabnik/echo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/steveklabnik/echo" "work/ex/beta-1.37-6/sources/1.36.0/gh/steveklabnik/echo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/steveklabnik/echo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/steveklabnik/echo" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/steveklabnik/echo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/steveklabnik/echo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 44d0f2c9b955f457984aaebbb7b3cde2097cf722
[INFO] sha for GitHub repo steveklabnik/echo: 44d0f2c9b955f457984aaebbb7b3cde2097cf722
[INFO] validating manifest of steveklabnik/echo 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 steveklabnik/echo 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 steveklabnik/echo
[INFO] finished frobbing steveklabnik/echo
[INFO] frobbed toml for steveklabnik/echo written to work/ex/beta-1.37-6/sources/1.36.0/gh/steveklabnik/echo/Cargo.toml
[INFO] started frobbing steveklabnik/echo
[INFO] finished frobbing steveklabnik/echo
[INFO] frobbed toml for steveklabnik/echo written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/steveklabnik/echo/Cargo.toml
[INFO] crate steveklabnik/echo already has a lockfile, it will not be regenerated
[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 steveklabnik/echo 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-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/steveklabnik/echo:/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] ab47271891b9339599afc88a42ca22c84705d94707c8a078c10ccc1cdea00aee
[INFO] running `"docker" "start" "-a" "ab47271891b9339599afc88a42ca22c84705d94707c8a078c10ccc1cdea00aee"`
[INFO] [stderr]    Compiling echo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:44:17
[INFO] [stderr]    |
[INFO] [stderr] 44 |             Err(e) => { /* connection failed */ }
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `"docker" "inspect" "ab47271891b9339599afc88a42ca22c84705d94707c8a078c10ccc1cdea00aee"`
[INFO] running `"docker" "rm" "-f" "ab47271891b9339599afc88a42ca22c84705d94707c8a078c10ccc1cdea00aee"`
[INFO] [stdout] ab47271891b9339599afc88a42ca22c84705d94707c8a078c10ccc1cdea00aee
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/steveklabnik/echo:/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] 7967e2ebd705dc738f3577c99aa59a2a9c9009ade0fba10e10478d7401186c8a
[INFO] running `"docker" "start" "-a" "7967e2ebd705dc738f3577c99aa59a2a9c9009ade0fba10e10478d7401186c8a"`
[INFO] [stderr]    Compiling echo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:44:17
[INFO] [stderr]    |
[INFO] [stderr] 44 |             Err(e) => { /* connection failed */ }
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "7967e2ebd705dc738f3577c99aa59a2a9c9009ade0fba10e10478d7401186c8a"`
[INFO] running `"docker" "rm" "-f" "7967e2ebd705dc738f3577c99aa59a2a9c9009ade0fba10e10478d7401186c8a"`
[INFO] [stdout] 7967e2ebd705dc738f3577c99aa59a2a9c9009ade0fba10e10478d7401186c8a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/steveklabnik/echo:/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] 4379e21668abc381cbe6ee260bb1b899983fd8111bfa568db7c838c3d0df8c88
[INFO] running `"docker" "start" "-a" "4379e21668abc381cbe6ee260bb1b899983fd8111bfa568db7c838c3d0df8c88"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/echo-709725ac3ae0b975
[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" "4379e21668abc381cbe6ee260bb1b899983fd8111bfa568db7c838c3d0df8c88"`
[INFO] running `"docker" "rm" "-f" "4379e21668abc381cbe6ee260bb1b899983fd8111bfa568db7c838c3d0df8c88"`
[INFO] [stdout] 4379e21668abc381cbe6ee260bb1b899983fd8111bfa568db7c838c3d0df8c88