[INFO] updating cached repository Algatux/rust-experiments
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Algatux/rust-experiments
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Algatux/rust-experiments" "work/ex/beta-1.37-6/sources/1.36.0/gh/Algatux/rust-experiments"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Algatux/rust-experiments'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Algatux/rust-experiments" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Algatux/rust-experiments"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Algatux/rust-experiments'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8111cdfa60cc593ecc7befaa40e5eb20b3c53a8e
[INFO] sha for GitHub repo Algatux/rust-experiments: 8111cdfa60cc593ecc7befaa40e5eb20b3c53a8e
[INFO] validating manifest of Algatux/rust-experiments 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 Algatux/rust-experiments 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 Algatux/rust-experiments
[INFO] finished frobbing Algatux/rust-experiments
[INFO] frobbed toml for Algatux/rust-experiments written to work/ex/beta-1.37-6/sources/1.36.0/gh/Algatux/rust-experiments/Cargo.toml
[INFO] started frobbing Algatux/rust-experiments
[INFO] finished frobbing Algatux/rust-experiments
[INFO] frobbed toml for Algatux/rust-experiments written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Algatux/rust-experiments/Cargo.toml
[INFO] crate Algatux/rust-experiments already has a lockfile, it will not be regenerated
[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 Algatux/rust-experiments 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-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Algatux/rust-experiments:/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] e85aa7cc49639d9d05b335015a9d2ceb3fd384933b014d454bbff0338211eaf7
[INFO] running `"docker" "start" "-a" "e85aa7cc49639d9d05b335015a9d2ceb3fd384933b014d454bbff0338211eaf7"`
[INFO] [stderr]    Compiling rust-experiments v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]   --> src/main.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn size(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "e85aa7cc49639d9d05b335015a9d2ceb3fd384933b014d454bbff0338211eaf7"`
[INFO] running `"docker" "rm" "-f" "e85aa7cc49639d9d05b335015a9d2ceb3fd384933b014d454bbff0338211eaf7"`
[INFO] [stdout] e85aa7cc49639d9d05b335015a9d2ceb3fd384933b014d454bbff0338211eaf7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Algatux/rust-experiments:/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] 1ec8b62d0f5f652966e5959912811d99292e0811eb38e679a38c90bfe315b329
[INFO] running `"docker" "start" "-a" "1ec8b62d0f5f652966e5959912811d99292e0811eb38e679a38c90bfe315b329"`
[INFO] [stderr]    Compiling rust-experiments v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]   --> src/main.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn size(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "1ec8b62d0f5f652966e5959912811d99292e0811eb38e679a38c90bfe315b329"`
[INFO] running `"docker" "rm" "-f" "1ec8b62d0f5f652966e5959912811d99292e0811eb38e679a38c90bfe315b329"`
[INFO] [stdout] 1ec8b62d0f5f652966e5959912811d99292e0811eb38e679a38c90bfe315b329
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Algatux/rust-experiments:/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] 90e9e7c2ea00427f8a48e9388f010e989e13ce166de2ea5b24d87227c21fef78
[INFO] running `"docker" "start" "-a" "90e9e7c2ea00427f8a48e9388f010e989e13ce166de2ea5b24d87227c21fef78"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_experiments-9e4877413ed17c97
[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" "90e9e7c2ea00427f8a48e9388f010e989e13ce166de2ea5b24d87227c21fef78"`
[INFO] running `"docker" "rm" "-f" "90e9e7c2ea00427f8a48e9388f010e989e13ce166de2ea5b24d87227c21fef78"`
[INFO] [stdout] 90e9e7c2ea00427f8a48e9388f010e989e13ce166de2ea5b24d87227c21fef78