[INFO] updating cached repository alexcrichton/rust-fannkuch-js-and-wasm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alexcrichton/rust-fannkuch-js-and-wasm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alexcrichton/rust-fannkuch-js-and-wasm" "work/ex/beta-1.37-6/sources/1.36.0/gh/alexcrichton/rust-fannkuch-js-and-wasm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/alexcrichton/rust-fannkuch-js-and-wasm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alexcrichton/rust-fannkuch-js-and-wasm" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/alexcrichton/rust-fannkuch-js-and-wasm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/alexcrichton/rust-fannkuch-js-and-wasm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 76c51c3e13edc0f91c1ed35b981ed94619ccd9cc
[INFO] sha for GitHub repo alexcrichton/rust-fannkuch-js-and-wasm: 76c51c3e13edc0f91c1ed35b981ed94619ccd9cc
[INFO] validating manifest of alexcrichton/rust-fannkuch-js-and-wasm 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 alexcrichton/rust-fannkuch-js-and-wasm 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 alexcrichton/rust-fannkuch-js-and-wasm
[INFO] finished frobbing alexcrichton/rust-fannkuch-js-and-wasm
[INFO] frobbed toml for alexcrichton/rust-fannkuch-js-and-wasm written to work/ex/beta-1.37-6/sources/1.36.0/gh/alexcrichton/rust-fannkuch-js-and-wasm/Cargo.toml
[INFO] started frobbing alexcrichton/rust-fannkuch-js-and-wasm
[INFO] finished frobbing alexcrichton/rust-fannkuch-js-and-wasm
[INFO] frobbed toml for alexcrichton/rust-fannkuch-js-and-wasm written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/alexcrichton/rust-fannkuch-js-and-wasm/Cargo.toml
[INFO] crate alexcrichton/rust-fannkuch-js-and-wasm 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 alexcrichton/rust-fannkuch-js-and-wasm 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-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/alexcrichton/rust-fannkuch-js-and-wasm:/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] 3883d7c6034187e6a71df6878fb74141619d5380ab7cb40a0092f128321884e0
[INFO] running `"docker" "start" "-a" "3883d7c6034187e6a71df6878fb74141619d5380ab7cb40a0092f128321884e0"`
[INFO] [stderr]    Compiling rust-fannkuch-js-and-wasm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `checksum`
[INFO] [stderr]    --> src/lib.rs:125:10
[INFO] [stderr]     |
[INFO] [stderr] 125 |     let (checksum, maxflips) = fannkuch(n);
[INFO] [stderr]     |          ^^^^^^^^ help: consider prefixing with an underscore: `_checksum`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `maxflips`
[INFO] [stderr]    --> src/lib.rs:125:20
[INFO] [stderr]     |
[INFO] [stderr] 125 |     let (checksum, maxflips) = fannkuch(n);
[INFO] [stderr]     |                    ^^^^^^^^ help: consider prefixing with an underscore: `_maxflips`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "3883d7c6034187e6a71df6878fb74141619d5380ab7cb40a0092f128321884e0"`
[INFO] running `"docker" "rm" "-f" "3883d7c6034187e6a71df6878fb74141619d5380ab7cb40a0092f128321884e0"`
[INFO] [stdout] 3883d7c6034187e6a71df6878fb74141619d5380ab7cb40a0092f128321884e0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/alexcrichton/rust-fannkuch-js-and-wasm:/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] a6ac994cd67a627c48c5e7a06b875a472c3f4cb6258c89677bba31f86cf30710
[INFO] running `"docker" "start" "-a" "a6ac994cd67a627c48c5e7a06b875a472c3f4cb6258c89677bba31f86cf30710"`
[INFO] [stderr]    Compiling rust-fannkuch-js-and-wasm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `checksum`
[INFO] [stderr]    --> src/lib.rs:125:10
[INFO] [stderr]     |
[INFO] [stderr] 125 |     let (checksum, maxflips) = fannkuch(n);
[INFO] [stderr]     |          ^^^^^^^^ help: consider prefixing with an underscore: `_checksum`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `maxflips`
[INFO] [stderr]    --> src/lib.rs:125:20
[INFO] [stderr]     |
[INFO] [stderr] 125 |     let (checksum, maxflips) = fannkuch(n);
[INFO] [stderr]     |                    ^^^^^^^^ help: consider prefixing with an underscore: `_maxflips`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "a6ac994cd67a627c48c5e7a06b875a472c3f4cb6258c89677bba31f86cf30710"`
[INFO] running `"docker" "rm" "-f" "a6ac994cd67a627c48c5e7a06b875a472c3f4cb6258c89677bba31f86cf30710"`
[INFO] [stdout] a6ac994cd67a627c48c5e7a06b875a472c3f4cb6258c89677bba31f86cf30710
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/alexcrichton/rust-fannkuch-js-and-wasm:/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] a09bc33cafdd7802bc9f257db54d1c941d414b4f388a95a08c8574cc8bc5ccff
[INFO] running `"docker" "start" "-a" "a09bc33cafdd7802bc9f257db54d1c941d414b4f388a95a08c8574cc8bc5ccff"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_fannkuch_js_and_wasm-76283bb20d70cfc1
[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" "a09bc33cafdd7802bc9f257db54d1c941d414b4f388a95a08c8574cc8bc5ccff"`
[INFO] running `"docker" "rm" "-f" "a09bc33cafdd7802bc9f257db54d1c941d414b4f388a95a08c8574cc8bc5ccff"`
[INFO] [stdout] a09bc33cafdd7802bc9f257db54d1c941d414b4f388a95a08c8574cc8bc5ccff