[INFO] updating cached repository fatoche/rustbridge-workshop
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fatoche/rustbridge-workshop
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fatoche/rustbridge-workshop" "work/ex/beta-1.38-1/sources/1.37.0/gh/fatoche/rustbridge-workshop"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/fatoche/rustbridge-workshop'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fatoche/rustbridge-workshop" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fatoche/rustbridge-workshop"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fatoche/rustbridge-workshop'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 261b8b6099756ab9b59cdebc000eb0d6f72feb89
[INFO] sha for GitHub repo fatoche/rustbridge-workshop: 261b8b6099756ab9b59cdebc000eb0d6f72feb89
[INFO] validating manifest of fatoche/rustbridge-workshop 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 fatoche/rustbridge-workshop 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 fatoche/rustbridge-workshop
[INFO] finished frobbing fatoche/rustbridge-workshop
[INFO] frobbed toml for fatoche/rustbridge-workshop written to work/ex/beta-1.38-1/sources/1.37.0/gh/fatoche/rustbridge-workshop/Cargo.toml
[INFO] started frobbing fatoche/rustbridge-workshop
[INFO] finished frobbing fatoche/rustbridge-workshop
[INFO] frobbed toml for fatoche/rustbridge-workshop written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fatoche/rustbridge-workshop/Cargo.toml
[INFO] crate fatoche/rustbridge-workshop 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 fatoche/rustbridge-workshop 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-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fatoche/rustbridge-workshop:/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] 01ddfe67dcf86f15c9ad6e11ff3227619146cdbe9862620aadcc5977bebea4ab
[INFO] running `"docker" "start" "-a" "01ddfe67dcf86f15c9ad6e11ff3227619146cdbe9862620aadcc5977bebea4ab"`
[INFO] [stderr]    Compiling libc v0.2.41
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling httparse v1.2.4
[INFO] [stderr]    Compiling motivations v1.1.2
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling bytes v0.4.8
[INFO] [stderr]    Compiling http v0.1.5
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling pick-one v1.0.1
[INFO] [stderr]    Compiling simple-server v0.3.0
[INFO] [stderr]    Compiling rustbridge-workshop v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `learning_main`
[INFO] [stderr]   --> src/main.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn learning_main() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add_fifty`
[INFO] [stderr]   --> src/main.rs:84:1
[INFO] [stderr]    |
[INFO] [stderr] 84 | fn add_fifty(n: i32) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.26s
[INFO] running `"docker" "inspect" "01ddfe67dcf86f15c9ad6e11ff3227619146cdbe9862620aadcc5977bebea4ab"`
[INFO] running `"docker" "rm" "-f" "01ddfe67dcf86f15c9ad6e11ff3227619146cdbe9862620aadcc5977bebea4ab"`
[INFO] [stdout] 01ddfe67dcf86f15c9ad6e11ff3227619146cdbe9862620aadcc5977bebea4ab
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fatoche/rustbridge-workshop:/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] b60a0f1ebe690f9bf8f6d425637a0e0753a42b69162f86e5f21d684450eb29c7
[INFO] running `"docker" "start" "-a" "b60a0f1ebe690f9bf8f6d425637a0e0753a42b69162f86e5f21d684450eb29c7"`
[INFO] [stderr]    Compiling rustbridge-workshop v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `learning_main`
[INFO] [stderr]   --> src/main.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn learning_main() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "b60a0f1ebe690f9bf8f6d425637a0e0753a42b69162f86e5f21d684450eb29c7"`
[INFO] running `"docker" "rm" "-f" "b60a0f1ebe690f9bf8f6d425637a0e0753a42b69162f86e5f21d684450eb29c7"`
[INFO] [stdout] b60a0f1ebe690f9bf8f6d425637a0e0753a42b69162f86e5f21d684450eb29c7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fatoche/rustbridge-workshop:/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] f797e18bb881d22e597ae09dd15c5eb057018543de176fd8196e071b60feb7fa
[INFO] running `"docker" "start" "-a" "f797e18bb881d22e597ae09dd15c5eb057018543de176fd8196e071b60feb7fa"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rustbridge_workshop-27e29d74f3d63206
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test stupid_test ... ignored
[INFO] [stdout] test test_add_fifty ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f797e18bb881d22e597ae09dd15c5eb057018543de176fd8196e071b60feb7fa"`
[INFO] running `"docker" "rm" "-f" "f797e18bb881d22e597ae09dd15c5eb057018543de176fd8196e071b60feb7fa"`
[INFO] [stdout] f797e18bb881d22e597ae09dd15c5eb057018543de176fd8196e071b60feb7fa