[INFO] crate lepton-mux 0.0.1 is already in cache
[INFO] testing lepton-mux-0.0.1 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate lepton-mux 0.0.1 into work/builds/worker-4/source
[INFO] validating manifest of crates.io crate lepton-mux 0.0.1 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate lepton-mux 0.0.1
[INFO] finished tweaking crates.io crate lepton-mux 0.0.1
[INFO] tweaked toml for crates.io crate lepton-mux 0.0.1 written to work/builds/worker-4/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 3b8b0d941a0e52e30df4aaca5b5f67a6357430d485062a4d8bffa9a4c8cadd21
[INFO] running `"docker" "start" "-a" "3b8b0d941a0e52e30df4aaca5b5f67a6357430d485062a4d8bffa9a4c8cadd21"`
[INFO] [stderr]    Compiling alloc-no-stdlib v1.3.0
[INFO] [stderr]    Compiling lepton-mux v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/mux.rs:130:21
[INFO] [stderr]     |
[INFO] [stderr] 130 |                 let mut is_lagging = self.last_flush[index] + MAX_FLUSH_VARIANCE < max_flush;
[INFO] [stderr]     |                     ----^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "3b8b0d941a0e52e30df4aaca5b5f67a6357430d485062a4d8bffa9a4c8cadd21"`
[INFO] running `"docker" "rm" "-f" "3b8b0d941a0e52e30df4aaca5b5f67a6357430d485062a4d8bffa9a4c8cadd21"`
[INFO] [stdout] 3b8b0d941a0e52e30df4aaca5b5f67a6357430d485062a4d8bffa9a4c8cadd21
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] f0b346ed4ab0ab03d1e0d9a5f85be760fd1c284d987a58ceecc1423e14a6f20d
[INFO] running `"docker" "start" "-a" "f0b346ed4ab0ab03d1e0d9a5f85be760fd1c284d987a58ceecc1423e14a6f20d"`
[INFO] [stderr]    Compiling lepton-mux v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/mux.rs:130:21
[INFO] [stderr]     |
[INFO] [stderr] 130 |                 let mut is_lagging = self.last_flush[index] + MAX_FLUSH_VARIANCE < max_flush;
[INFO] [stderr]     |                     ----^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `"docker" "inspect" "f0b346ed4ab0ab03d1e0d9a5f85be760fd1c284d987a58ceecc1423e14a6f20d"`
[INFO] running `"docker" "rm" "-f" "f0b346ed4ab0ab03d1e0d9a5f85be760fd1c284d987a58ceecc1423e14a6f20d"`
[INFO] [stdout] f0b346ed4ab0ab03d1e0d9a5f85be760fd1c284d987a58ceecc1423e14a6f20d
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] f615ee4ca0f481235aad4e06386f86b34c9cd0ba57ff8e587b17aee02a4ffe32
[INFO] running `"docker" "start" "-a" "f615ee4ca0f481235aad4e06386f86b34c9cd0ba57ff8e587b17aee02a4ffe32"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lepton_mux-df7e5a80093ff5c2
[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/rustwide/target/debug/deps/integration_test-b95c34e220fc1631
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test test_nano_mux ... ok
[INFO] [stdout] test unit_test_decode_mux ... ok
[INFO] [stdout] test test_short_mux ... ok
[INFO] [stdout] test test_tiny_mux ... ok
[INFO] [stdout] test test_real_mux ... ok
[INFO] [stdout] test test_sc3_mux ... ok
[INFO] [stdout] test test_med_mux ... ok
[INFO] [stdout] test test_balance_mux ... ok
[INFO] [stdout] test test_interleaved_mux ... ok
[INFO] [stdout] test test_long_mux ... ok
[INFO] [stdout] test test_3meg_mux ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lepton-mux
[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" "f615ee4ca0f481235aad4e06386f86b34c9cd0ba57ff8e587b17aee02a4ffe32"`
[INFO] running `"docker" "rm" "-f" "f615ee4ca0f481235aad4e06386f86b34c9cd0ba57ff8e587b17aee02a4ffe32"`
[INFO] [stdout] f615ee4ca0f481235aad4e06386f86b34c9cd0ba57ff8e587b17aee02a4ffe32