[INFO] fetching crate wasmer-emscripten 0.5.7...
[INFO] extracting crate wasmer-emscripten 0.5.7 into work/ex/beta-1.37-6/sources/1.36.0/reg/wasmer-emscripten/0.5.7
[INFO] extracting crate wasmer-emscripten 0.5.7 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/wasmer-emscripten/0.5.7
[INFO] validating manifest of wasmer-emscripten-0.5.7 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 wasmer-emscripten-0.5.7 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 wasmer-emscripten-0.5.7
[INFO] finished frobbing wasmer-emscripten-0.5.7
[INFO] frobbed toml for wasmer-emscripten-0.5.7 written to work/ex/beta-1.37-6/sources/1.36.0/reg/wasmer-emscripten/0.5.7/Cargo.toml
[INFO] started frobbing wasmer-emscripten-0.5.7
[INFO] finished frobbing wasmer-emscripten-0.5.7
[INFO] frobbed toml for wasmer-emscripten-0.5.7 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/wasmer-emscripten/0.5.7/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] [stderr]     Blocking waiting for file lock on package cache lock
[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 wasmer-emscripten-0.5.7 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-2/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/wasmer-emscripten/0.5.7:/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] 220c66b1b495cad95695d46b5fb25618a66adb91863728f4856a9acc846e575b
[INFO] running `"docker" "start" "-a" "220c66b1b495cad95695d46b5fb25618a66adb91863728f4856a9acc846e575b"`
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling wasmparser v0.32.1
[INFO] [stderr]    Compiling page_size v0.4.1
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling blake2b_simd v0.4.1
[INFO] [stderr]    Compiling wasmer-runtime-core v0.5.7
[INFO] [stderr]    Compiling winconsole v0.10.0
[INFO] [stderr]    Compiling colored v1.8.0
[INFO] [stderr]    Compiling serde-bench v0.0.7
[INFO] [stderr]    Compiling hashbrown v0.1.8
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling serde_bytes v0.10.5
[INFO] [stderr]    Compiling wasmer-emscripten v0.5.7 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/memory.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let mut globals = get_emscripten_data(ctx).globals;
[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 1m 05s
[INFO] running `"docker" "inspect" "220c66b1b495cad95695d46b5fb25618a66adb91863728f4856a9acc846e575b"`
[INFO] running `"docker" "rm" "-f" "220c66b1b495cad95695d46b5fb25618a66adb91863728f4856a9acc846e575b"`
[INFO] [stdout] 220c66b1b495cad95695d46b5fb25618a66adb91863728f4856a9acc846e575b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/wasmer-emscripten/0.5.7:/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] 877426447f40490923c059b6e8bcfb14966c25b2b9b2850a2b8d8a350c812ec2
[INFO] running `"docker" "start" "-a" "877426447f40490923c059b6e8bcfb14966c25b2b9b2850a2b8d8a350c812ec2"`
[INFO] [stderr]    Compiling wasmer-emscripten v0.5.7 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/memory.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let mut globals = get_emscripten_data(ctx).globals;
[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 4.01s
[INFO] running `"docker" "inspect" "877426447f40490923c059b6e8bcfb14966c25b2b9b2850a2b8d8a350c812ec2"`
[INFO] running `"docker" "rm" "-f" "877426447f40490923c059b6e8bcfb14966c25b2b9b2850a2b8d8a350c812ec2"`
[INFO] [stdout] 877426447f40490923c059b6e8bcfb14966c25b2b9b2850a2b8d8a350c812ec2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/wasmer-emscripten/0.5.7:/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] d4ea6a3e6237c3e9e47ff4978d4b77690bbae6f46a54b12c6d7e23208bcd93db
[INFO] running `"docker" "start" "-a" "d4ea6a3e6237c3e9e47ff4978d4b77690bbae6f46a54b12c6d7e23208bcd93db"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/wasmer_emscripten-981a158a57f6c7d7
[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 wasmer-emscripten
[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" "d4ea6a3e6237c3e9e47ff4978d4b77690bbae6f46a54b12c6d7e23208bcd93db"`
[INFO] running `"docker" "rm" "-f" "d4ea6a3e6237c3e9e47ff4978d4b77690bbae6f46a54b12c6d7e23208bcd93db"`
[INFO] [stdout] d4ea6a3e6237c3e9e47ff4978d4b77690bbae6f46a54b12c6d7e23208bcd93db