[INFO] updating cached repository phyber/cyd
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/phyber/cyd
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/phyber/cyd" "work/ex/beta-1.38-1/sources/1.37.0/gh/phyber/cyd"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/phyber/cyd'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/phyber/cyd" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phyber/cyd"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phyber/cyd'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a44ddfa4fa1b0450c7ac7c0585641f27f544da11
[INFO] sha for GitHub repo phyber/cyd: a44ddfa4fa1b0450c7ac7c0585641f27f544da11
[INFO] validating manifest of phyber/cyd 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 phyber/cyd 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 phyber/cyd
[INFO] finished frobbing phyber/cyd
[INFO] frobbed toml for phyber/cyd written to work/ex/beta-1.38-1/sources/1.37.0/gh/phyber/cyd/Cargo.toml
[INFO] started frobbing phyber/cyd
[INFO] finished frobbing phyber/cyd
[INFO] frobbed toml for phyber/cyd written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phyber/cyd/Cargo.toml
[INFO] crate phyber/cyd 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 phyber/cyd 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/phyber/cyd:/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] c86c9aded9a91f4c63ad9ab523b7c055dd66aff4aad2d1a97994e4cfd14573fe
[INFO] running `"docker" "start" "-a" "c86c9aded9a91f4c63ad9ab523b7c055dd66aff4aad2d1a97994e4cfd14573fe"`
[INFO] [stderr]    Compiling serde_yaml v0.8.8
[INFO] [stderr]    Compiling toml v0.4.9
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling cyd v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:57:17
[INFO] [stderr]    |
[INFO] [stderr] 57 |                 write!(out, "{}", s);
[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]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.44s
[INFO] running `"docker" "inspect" "c86c9aded9a91f4c63ad9ab523b7c055dd66aff4aad2d1a97994e4cfd14573fe"`
[INFO] running `"docker" "rm" "-f" "c86c9aded9a91f4c63ad9ab523b7c055dd66aff4aad2d1a97994e4cfd14573fe"`
[INFO] [stdout] c86c9aded9a91f4c63ad9ab523b7c055dd66aff4aad2d1a97994e4cfd14573fe
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/phyber/cyd:/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] 824eee709ba1749df742c04275a00733321ab281748fbe382f1c84284771887b
[INFO] running `"docker" "start" "-a" "824eee709ba1749df742c04275a00733321ab281748fbe382f1c84284771887b"`
[INFO] [stderr]    Compiling cyd v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:57:17
[INFO] [stderr]    |
[INFO] [stderr] 57 |                 write!(out, "{}", s);
[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]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "824eee709ba1749df742c04275a00733321ab281748fbe382f1c84284771887b"`
[INFO] running `"docker" "rm" "-f" "824eee709ba1749df742c04275a00733321ab281748fbe382f1c84284771887b"`
[INFO] [stdout] 824eee709ba1749df742c04275a00733321ab281748fbe382f1c84284771887b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/phyber/cyd:/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] 231bb0a374011165018adf70c9d12cac2bfae054558f55c652ced8f33f00a22a
[INFO] running `"docker" "start" "-a" "231bb0a374011165018adf70c9d12cac2bfae054558f55c652ced8f33f00a22a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cyd-1fe372c84b49b329
[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" "231bb0a374011165018adf70c9d12cac2bfae054558f55c652ced8f33f00a22a"`
[INFO] running `"docker" "rm" "-f" "231bb0a374011165018adf70c9d12cac2bfae054558f55c652ced8f33f00a22a"`
[INFO] [stdout] 231bb0a374011165018adf70c9d12cac2bfae054558f55c652ced8f33f00a22a