[INFO] updating cached repository chrmod/rust-webextension-protocol
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/chrmod/rust-webextension-protocol
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/chrmod/rust-webextension-protocol" "work/ex/beta-1.38-1/sources/1.37.0/gh/chrmod/rust-webextension-protocol"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/chrmod/rust-webextension-protocol'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/chrmod/rust-webextension-protocol" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chrmod/rust-webextension-protocol"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chrmod/rust-webextension-protocol'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 807a2216b19645a2a78c1c929b39054cb71adb68
[INFO] sha for GitHub repo chrmod/rust-webextension-protocol: 807a2216b19645a2a78c1c929b39054cb71adb68
[INFO] validating manifest of chrmod/rust-webextension-protocol 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 chrmod/rust-webextension-protocol 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 chrmod/rust-webextension-protocol
[INFO] finished frobbing chrmod/rust-webextension-protocol
[INFO] frobbed toml for chrmod/rust-webextension-protocol written to work/ex/beta-1.38-1/sources/1.37.0/gh/chrmod/rust-webextension-protocol/Cargo.toml
[INFO] started frobbing chrmod/rust-webextension-protocol
[INFO] finished frobbing chrmod/rust-webextension-protocol
[INFO] frobbed toml for chrmod/rust-webextension-protocol written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/chrmod/rust-webextension-protocol/Cargo.toml
[INFO] crate chrmod/rust-webextension-protocol already has a lockfile, it will not be regenerated
[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 chrmod/rust-webextension-protocol against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/chrmod/rust-webextension-protocol:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 0e63ce198be7c4219bdf7161b47695cdf1430efd305e8d99b9985aecbdf22a83
[INFO] running `"docker" "start" "-a" "0e63ce198be7c4219bdf7161b47695cdf1430efd305e8d99b9985aecbdf22a83"`
[INFO] [stderr]    Compiling webextension-protocol v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `"docker" "inspect" "0e63ce198be7c4219bdf7161b47695cdf1430efd305e8d99b9985aecbdf22a83"`
[INFO] running `"docker" "rm" "-f" "0e63ce198be7c4219bdf7161b47695cdf1430efd305e8d99b9985aecbdf22a83"`
[INFO] [stdout] 0e63ce198be7c4219bdf7161b47695cdf1430efd305e8d99b9985aecbdf22a83
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/chrmod/rust-webextension-protocol:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7c193f501f9bae3cbe95120b658ee1d6575092ab61e569ee0446509086aa19a9
[INFO] running `"docker" "start" "-a" "7c193f501f9bae3cbe95120b658ee1d6575092ab61e569ee0446509086aa19a9"`
[INFO] [stderr]    Compiling webextension-protocol v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `"docker" "inspect" "7c193f501f9bae3cbe95120b658ee1d6575092ab61e569ee0446509086aa19a9"`
[INFO] running `"docker" "rm" "-f" "7c193f501f9bae3cbe95120b658ee1d6575092ab61e569ee0446509086aa19a9"`
[INFO] [stdout] 7c193f501f9bae3cbe95120b658ee1d6575092ab61e569ee0446509086aa19a9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/chrmod/rust-webextension-protocol:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] d32c9eb602a97c0477a0e11818eca5f7d08557a881cf2cd6563f89e5e979aa0e
[INFO] running `"docker" "start" "-a" "d32c9eb602a97c0477a0e11818eca5f7d08557a881cf2cd6563f89e5e979aa0e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/webextension_protocol-4852f165cb6d5e1e
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/simple_tests-f00b1e5a831e8ac2
[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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test read_fixture_test ... ok
[INFO] [stderr] going to read 7 bytes
[INFO] [stdout] test write_read_test ... ok
[INFO] [stderr] received: {"a":1}
[INFO] [stdout] 
[INFO] [stderr] going to read 7 bytes
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] received: {"a":1}
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests webextension-protocol
[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" "d32c9eb602a97c0477a0e11818eca5f7d08557a881cf2cd6563f89e5e979aa0e"`
[INFO] running `"docker" "rm" "-f" "d32c9eb602a97c0477a0e11818eca5f7d08557a881cf2cd6563f89e5e979aa0e"`
[INFO] [stdout] d32c9eb602a97c0477a0e11818eca5f7d08557a881cf2cd6563f89e5e979aa0e