[INFO] crate duckdns 0.1.1 is already in cache
[INFO] extracting crate duckdns 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/duckdns/0.1.1
[INFO] extracting crate duckdns 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/duckdns/0.1.1
[INFO] validating manifest of duckdns-0.1.1 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 duckdns-0.1.1 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 duckdns-0.1.1
[INFO] finished frobbing duckdns-0.1.1
[INFO] frobbed toml for duckdns-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/duckdns/0.1.1/Cargo.toml
[INFO] started frobbing duckdns-0.1.1
[INFO] finished frobbing duckdns-0.1.1
[INFO] frobbed toml for duckdns-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/duckdns/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing duckdns-0.1.1 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-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/duckdns/0.1.1:/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] 92912c37d03904536a022e6d9fa8808d9e71313513d362106f8417aabf3876c9
[INFO] running `"docker" "start" "-a" "92912c37d03904536a022e6d9fa8808d9e71313513d362106f8417aabf3876c9"`
[INFO] [stderr]    Compiling duckdns v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "92912c37d03904536a022e6d9fa8808d9e71313513d362106f8417aabf3876c9"`
[INFO] running `"docker" "rm" "-f" "92912c37d03904536a022e6d9fa8808d9e71313513d362106f8417aabf3876c9"`
[INFO] [stdout] 92912c37d03904536a022e6d9fa8808d9e71313513d362106f8417aabf3876c9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/duckdns/0.1.1:/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] 1640ea7bc8a6d2afba63419224b96a872d4d98f27d404e9fd4f9a49523378338
[INFO] running `"docker" "start" "-a" "1640ea7bc8a6d2afba63419224b96a872d4d98f27d404e9fd4f9a49523378338"`
[INFO] [stderr]    Compiling syntex_fmt_macros v0.5.0
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling derive-error-chain v0.11.2
[INFO] [stderr]    Compiling dotenv v0.11.0
[INFO] [stderr]    Compiling duckdns v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> examples/update.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | /     duckdns::DuckDns::new(token)
[INFO] [stderr] 7 | |         .domains("duckdns-rs")
[INFO] [stderr] 8 | |         .ipv4("123.45.67.89")
[INFO] [stderr] 9 | |         .update();
[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 20.21s
[INFO] running `"docker" "inspect" "1640ea7bc8a6d2afba63419224b96a872d4d98f27d404e9fd4f9a49523378338"`
[INFO] running `"docker" "rm" "-f" "1640ea7bc8a6d2afba63419224b96a872d4d98f27d404e9fd4f9a49523378338"`
[INFO] [stdout] 1640ea7bc8a6d2afba63419224b96a872d4d98f27d404e9fd4f9a49523378338
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/duckdns/0.1.1:/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] 255ff48b64fe5f2cdd7a2f0866b86285be241a0a7a30de4e99ccfac415e0c2fc
[INFO] running `"docker" "start" "-a" "255ff48b64fe5f2cdd7a2f0866b86285be241a0a7a30de4e99ccfac415e0c2fc"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/duckdns-47198182b86334a6
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::verbose ... ok
[INFO] [stdout] test tests::ipv4 ... ok
[INFO] [stdout] test tests::clear ... ok
[INFO] [stdout] test tests::ipv6 ... ok
[INFO] [stdout] test tests::simple ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests duckdns
[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" "255ff48b64fe5f2cdd7a2f0866b86285be241a0a7a30de4e99ccfac415e0c2fc"`
[INFO] running `"docker" "rm" "-f" "255ff48b64fe5f2cdd7a2f0866b86285be241a0a7a30de4e99ccfac415e0c2fc"`
[INFO] [stdout] 255ff48b64fe5f2cdd7a2f0866b86285be241a0a7a30de4e99ccfac415e0c2fc