[INFO] updating cached repository ilja4/test_keygen
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ilja4/test_keygen
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ilja4/test_keygen" "work/ex/beta-1.38-1/sources/1.37.0/gh/ilja4/test_keygen"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ilja4/test_keygen'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ilja4/test_keygen" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ilja4/test_keygen"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ilja4/test_keygen'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 03a56ef7b1bef18cd40c2c4ed74f2afca9c97d16
[INFO] sha for GitHub repo ilja4/test_keygen: 03a56ef7b1bef18cd40c2c4ed74f2afca9c97d16
[INFO] validating manifest of ilja4/test_keygen 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 ilja4/test_keygen 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 ilja4/test_keygen
[INFO] finished frobbing ilja4/test_keygen
[INFO] frobbed toml for ilja4/test_keygen written to work/ex/beta-1.38-1/sources/1.37.0/gh/ilja4/test_keygen/Cargo.toml
[INFO] started frobbing ilja4/test_keygen
[INFO] finished frobbing ilja4/test_keygen
[INFO] frobbed toml for ilja4/test_keygen written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ilja4/test_keygen/Cargo.toml
[INFO] crate ilja4/test_keygen 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 ilja4/test_keygen 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-4/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/ilja4/test_keygen:/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] 5b7fff1c0e873098561f0afb1ebee41071f9618eb7b6dbbc2afd58d730b4f758
[INFO] running `"docker" "start" "-a" "5b7fff1c0e873098561f0afb1ebee41071f9618eb7b6dbbc2afd58d730b4f758"`
[INFO] [stderr]    Compiling cc v1.0.22
[INFO] [stderr]    Compiling openssl v0.10.11
[INFO] [stderr]    Compiling openssl-src v110.0.7+1.1.0i
[INFO] [stderr]    Compiling openssl-sys v0.9.35
[INFO] [stderr]    Compiling test_keygen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     file.read_to_end(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 56s
[INFO] running `"docker" "inspect" "5b7fff1c0e873098561f0afb1ebee41071f9618eb7b6dbbc2afd58d730b4f758"`
[INFO] running `"docker" "rm" "-f" "5b7fff1c0e873098561f0afb1ebee41071f9618eb7b6dbbc2afd58d730b4f758"`
[INFO] [stdout] 5b7fff1c0e873098561f0afb1ebee41071f9618eb7b6dbbc2afd58d730b4f758
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/ilja4/test_keygen:/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] b1ab1053481dd5125f124066cd89e344c7d0620a321317b1055230449330aac0
[INFO] running `"docker" "start" "-a" "b1ab1053481dd5125f124066cd89e344c7d0620a321317b1055230449330aac0"`
[INFO] [stderr]    Compiling test_keygen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     file.read_to_end(&mut buffer);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "b1ab1053481dd5125f124066cd89e344c7d0620a321317b1055230449330aac0"`
[INFO] running `"docker" "rm" "-f" "b1ab1053481dd5125f124066cd89e344c7d0620a321317b1055230449330aac0"`
[INFO] [stdout] b1ab1053481dd5125f124066cd89e344c7d0620a321317b1055230449330aac0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/ilja4/test_keygen:/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] 1287c8c671fb1d7e7433d890414c2fb9e5fe238e58b02cee23c3943b24902f56
[INFO] running `"docker" "start" "-a" "1287c8c671fb1d7e7433d890414c2fb9e5fe238e58b02cee23c3943b24902f56"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/test_keygen-3dab501a1d557527
[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" "1287c8c671fb1d7e7433d890414c2fb9e5fe238e58b02cee23c3943b24902f56"`
[INFO] running `"docker" "rm" "-f" "1287c8c671fb1d7e7433d890414c2fb9e5fe238e58b02cee23c3943b24902f56"`
[INFO] [stdout] 1287c8c671fb1d7e7433d890414c2fb9e5fe238e58b02cee23c3943b24902f56