[INFO] updating cached repository https://github.com/alexcrichton/rust-fannkuch-js-and-wasm
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 76c51c3e13edc0f91c1ed35b981ed94619ccd9cc
[INFO] testing alexcrichton/rust-fannkuch-js-and-wasm against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexcrichton%2Frust-fannkuch-js-and-wasm" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexcrichton/rust-fannkuch-js-and-wasm on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/alexcrichton/rust-fannkuch-js-and-wasm
[INFO] finished tweaking git repo https://github.com/alexcrichton/rust-fannkuch-js-and-wasm
[INFO] tweaked toml for git repo https://github.com/alexcrichton/rust-fannkuch-js-and-wasm written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/alexcrichton/rust-fannkuch-js-and-wasm already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 0415d123f60571dc0fda82364fbf4d2640891e468bd03d80f95eb49735ce4120
[INFO] running `"docker" "start" "-a" "0415d123f60571dc0fda82364fbf4d2640891e468bd03d80f95eb49735ce4120"`
[INFO] [stderr]    Compiling rust-fannkuch-js-and-wasm v0.1.0 (/opt/rustwide/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 0.59s
[INFO] running `"docker" "inspect" "0415d123f60571dc0fda82364fbf4d2640891e468bd03d80f95eb49735ce4120"`
[INFO] running `"docker" "rm" "-f" "0415d123f60571dc0fda82364fbf4d2640891e468bd03d80f95eb49735ce4120"`
[INFO] [stdout] 0415d123f60571dc0fda82364fbf4d2640891e468bd03d80f95eb49735ce4120
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 725da783712a6a8045f2a9fc3cd761310c0507a4f7baf0c5f006e4f390cd1442
[INFO] running `"docker" "start" "-a" "725da783712a6a8045f2a9fc3cd761310c0507a4f7baf0c5f006e4f390cd1442"`
[INFO] [stderr]    Compiling rust-fannkuch-js-and-wasm v0.1.0 (/opt/rustwide/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 2.07s
[INFO] running `"docker" "inspect" "725da783712a6a8045f2a9fc3cd761310c0507a4f7baf0c5f006e4f390cd1442"`
[INFO] running `"docker" "rm" "-f" "725da783712a6a8045f2a9fc3cd761310c0507a4f7baf0c5f006e4f390cd1442"`
[INFO] [stdout] 725da783712a6a8045f2a9fc3cd761310c0507a4f7baf0c5f006e4f390cd1442
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 0c051ccd37018ba458be82e0fb5bf93254f3cbb865206f51455fc8df0e71d841
[INFO] running `"docker" "start" "-a" "0c051ccd37018ba458be82e0fb5bf93254f3cbb865206f51455fc8df0e71d841"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_fannkuch_js_and_wasm-72a2cd3d17154145
[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" "0c051ccd37018ba458be82e0fb5bf93254f3cbb865206f51455fc8df0e71d841"`
[INFO] running `"docker" "rm" "-f" "0c051ccd37018ba458be82e0fb5bf93254f3cbb865206f51455fc8df0e71d841"`
[INFO] [stdout] 0c051ccd37018ba458be82e0fb5bf93254f3cbb865206f51455fc8df0e71d841