[INFO] crate wasmer-emscripten 0.5.7 is already in cache
[INFO] extracting crate wasmer-emscripten 0.5.7 into work/ex/beta-1.38-1/sources/1.37.0/reg/wasmer-emscripten/0.5.7
[INFO] extracting crate wasmer-emscripten 0.5.7 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/wasmer-emscripten/0.5.7
[INFO] validating manifest of wasmer-emscripten-0.5.7 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of wasmer-emscripten-0.5.7 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/reg/wasmer-emscripten/0.5.7/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing wasmer-emscripten-0.5.7 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] f4a0586a69ddaa05740a28463777ff0f6ea8bd6ac88bf069833f454667aa0d44
[INFO] running `"docker" "start" "-a" "f4a0586a69ddaa05740a28463777ff0f6ea8bd6ac88bf069833f454667aa0d44"`
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling constant_time_eq v0.1.4
[INFO] [stderr]    Compiling wasmparser v0.32.1
[INFO] [stderr]    Compiling page_size v0.4.1
[INFO] [stderr]    Compiling hashbrown v0.1.8
[INFO] [stderr]    Compiling serde_bytes v0.10.5
[INFO] [stderr]    Compiling serde-bench v0.0.7
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling winconsole v0.10.0
[INFO] [stderr]    Compiling colored v1.8.0
[INFO] [stderr]    Compiling blake2b_simd v0.4.1
[INFO] [stderr]    Compiling wasmer-runtime-core v0.5.7
[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 45.78s
[INFO] running `"docker" "inspect" "f4a0586a69ddaa05740a28463777ff0f6ea8bd6ac88bf069833f454667aa0d44"`
[INFO] running `"docker" "rm" "-f" "f4a0586a69ddaa05740a28463777ff0f6ea8bd6ac88bf069833f454667aa0d44"`
[INFO] [stdout] f4a0586a69ddaa05740a28463777ff0f6ea8bd6ac88bf069833f454667aa0d44
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] d7ccbe957a89ebf1e97366717d24d49d79061cc426cc663cf074876df1e5491b
[INFO] running `"docker" "start" "-a" "d7ccbe957a89ebf1e97366717d24d49d79061cc426cc663cf074876df1e5491b"`
[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 5.14s
[INFO] running `"docker" "inspect" "d7ccbe957a89ebf1e97366717d24d49d79061cc426cc663cf074876df1e5491b"`
[INFO] running `"docker" "rm" "-f" "d7ccbe957a89ebf1e97366717d24d49d79061cc426cc663cf074876df1e5491b"`
[INFO] [stdout] d7ccbe957a89ebf1e97366717d24d49d79061cc426cc663cf074876df1e5491b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] d2e393034fbe3bcc366af7eab6c2359965ac13d40bb49b692c98ca9be39ee21a
[INFO] running `"docker" "start" "-a" "d2e393034fbe3bcc366af7eab6c2359965ac13d40bb49b692c98ca9be39ee21a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/wasmer_emscripten-1e9440c58c4c40b8
[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" "d2e393034fbe3bcc366af7eab6c2359965ac13d40bb49b692c98ca9be39ee21a"`
[INFO] running `"docker" "rm" "-f" "d2e393034fbe3bcc366af7eab6c2359965ac13d40bb49b692c98ca9be39ee21a"`
[INFO] [stdout] d2e393034fbe3bcc366af7eab6c2359965ac13d40bb49b692c98ca9be39ee21a