[INFO] updating cached repository declspec/rustydns
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/declspec/rustydns
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/declspec/rustydns" "work/ex/beta-1.38-1/sources/1.37.0/gh/declspec/rustydns"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/declspec/rustydns'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/declspec/rustydns" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/declspec/rustydns"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/declspec/rustydns'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 19c20a5d5ba7f383e0f43ff31319c2559f50f8e6
[INFO] sha for GitHub repo declspec/rustydns: 19c20a5d5ba7f383e0f43ff31319c2559f50f8e6
[INFO] validating manifest of declspec/rustydns 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 declspec/rustydns 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 declspec/rustydns
[INFO] finished frobbing declspec/rustydns
[INFO] frobbed toml for declspec/rustydns written to work/ex/beta-1.38-1/sources/1.37.0/gh/declspec/rustydns/Cargo.toml
[INFO] started frobbing declspec/rustydns
[INFO] finished frobbing declspec/rustydns
[INFO] frobbed toml for declspec/rustydns written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/declspec/rustydns/Cargo.toml
[INFO] crate declspec/rustydns 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/declspec/rustydns/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing declspec/rustydns 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/declspec/rustydns:/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] b7360d3d2348c36fa3b89b0bbb19d6db11b2dcebf2f6c30e84cdb7dab9ff885d
[INFO] running `"docker" "start" "-a" "b7360d3d2348c36fa3b89b0bbb19d6db11b2dcebf2f6c30e84cdb7dab9ff885d"`
[INFO] [stderr]    Compiling dnsproxy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/dnsproxy/relay.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         Err(err) => {
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] ...
[INFO] [stderr] 48 |             let (len, client) = try_or_continue!(master.recv_from(&mut ibuffer));
[INFO] [stderr]    |                                 ------------------------------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DefaultInterceptor`
[INFO] [stderr]   --> src/dnsproxy/relay.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub struct DefaultInterceptor;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Literal`
[INFO] [stderr]   --> src/dnsproxy/interceptor.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Literal(String)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]   --> src/dnsproxy/interceptor.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     id: u16,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `qclass`
[INFO] [stderr]   --> src/dnsproxy/interceptor.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     qclass: u16
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.95s
[INFO] running `"docker" "inspect" "b7360d3d2348c36fa3b89b0bbb19d6db11b2dcebf2f6c30e84cdb7dab9ff885d"`
[INFO] running `"docker" "rm" "-f" "b7360d3d2348c36fa3b89b0bbb19d6db11b2dcebf2f6c30e84cdb7dab9ff885d"`
[INFO] [stdout] b7360d3d2348c36fa3b89b0bbb19d6db11b2dcebf2f6c30e84cdb7dab9ff885d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/declspec/rustydns:/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] 511f75a04fff1c88a4a558338cd19053f25a381fbaf4c23645f7064d8a6b4413
[INFO] running `"docker" "start" "-a" "511f75a04fff1c88a4a558338cd19053f25a381fbaf4c23645f7064d8a6b4413"`
[INFO] [stderr]    Compiling dnsproxy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/dnsproxy/relay.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         Err(err) => {
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] ...
[INFO] [stderr] 48 |             let (len, client) = try_or_continue!(master.recv_from(&mut ibuffer));
[INFO] [stderr]    |                                 ------------------------------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DefaultInterceptor`
[INFO] [stderr]   --> src/dnsproxy/relay.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub struct DefaultInterceptor;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Literal`
[INFO] [stderr]   --> src/dnsproxy/interceptor.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Literal(String)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]   --> src/dnsproxy/interceptor.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     id: u16,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `qclass`
[INFO] [stderr]   --> src/dnsproxy/interceptor.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     qclass: u16
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "511f75a04fff1c88a4a558338cd19053f25a381fbaf4c23645f7064d8a6b4413"`
[INFO] running `"docker" "rm" "-f" "511f75a04fff1c88a4a558338cd19053f25a381fbaf4c23645f7064d8a6b4413"`
[INFO] [stdout] 511f75a04fff1c88a4a558338cd19053f25a381fbaf4c23645f7064d8a6b4413
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/declspec/rustydns:/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] c200b387104c734c263ce569b45e2c60c821b486ed660a8b315ce6ba4277440a
[INFO] running `"docker" "start" "-a" "c200b387104c734c263ce569b45e2c60c821b486ed660a8b315ce6ba4277440a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dnsproxy-bd481c1ebfb11049
[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" "c200b387104c734c263ce569b45e2c60c821b486ed660a8b315ce6ba4277440a"`
[INFO] running `"docker" "rm" "-f" "c200b387104c734c263ce569b45e2c60c821b486ed660a8b315ce6ba4277440a"`
[INFO] [stdout] c200b387104c734c263ce569b45e2c60c821b486ed660a8b315ce6ba4277440a