[INFO] crate muon-rs 0.1.1 is already in cache
[INFO] extracting crate muon-rs 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/muon-rs/0.1.1
[INFO] extracting crate muon-rs 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/muon-rs/0.1.1
[INFO] validating manifest of muon-rs-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 muon-rs-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 muon-rs-0.1.1
[INFO] finished frobbing muon-rs-0.1.1
[INFO] frobbed toml for muon-rs-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/muon-rs/0.1.1/Cargo.toml
[INFO] started frobbing muon-rs-0.1.1
[INFO] finished frobbing muon-rs-0.1.1
[INFO] frobbed toml for muon-rs-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/muon-rs/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing muon-rs-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-2/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/muon-rs/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] 9dcb360ef40ac4965bae390f857b7b3422923680b85bfe7c5e16b191015ee8e4
[INFO] running `"docker" "start" "-a" "9dcb360ef40ac4965bae390f857b7b3422923680b85bfe7c5e16b191015ee8e4"`
[INFO] [stderr]    Compiling muon-rs v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "9dcb360ef40ac4965bae390f857b7b3422923680b85bfe7c5e16b191015ee8e4"`
[INFO] running `"docker" "rm" "-f" "9dcb360ef40ac4965bae390f857b7b3422923680b85bfe7c5e16b191015ee8e4"`
[INFO] [stdout] 9dcb360ef40ac4965bae390f857b7b3422923680b85bfe7c5e16b191015ee8e4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/muon-rs/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] 269d04fa562576a8a54eb28f6b56781a0a67be157855c089834b73db512c4b0e
[INFO] running `"docker" "start" "-a" "269d04fa562576a8a54eb28f6b56781a0a67be157855c089834b73db512c4b0e"`
[INFO] [stderr]    Compiling muon-rs v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `muon`
[INFO] [stderr]   --> tests/roundtrip.rs:11:24
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn derived_ser_de() -> muon::Result<()> {
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `muon`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `muon`
[INFO] [stderr]   --> tests/roundtrip.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let s = muon::to_string(&a)?;
[INFO] [stderr]    |             ^^^^ use of undeclared type or module `muon`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `muon`
[INFO] [stderr]   --> tests/roundtrip.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let aa: A = muon::from_str(&s)?;
[INFO] [stderr]    |                 ^^^^ use of undeclared type or module `muon`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `muon`
[INFO] [stderr]   --> tests/roundtrip.rs:24:24
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn derived_de_ser() -> muon::Result<()> {
[INFO] [stderr]    |                        ^^^^ use of undeclared type or module `muon`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `muon`
[INFO] [stderr]   --> tests/roundtrip.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let a: A = muon::from_str(&s)?;
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `muon`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `muon`
[INFO] [stderr]   --> tests/roundtrip.rs:27:14
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let ss = muon::to_string(&a)?;
[INFO] [stderr]    |              ^^^^ use of undeclared type or module `muon`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `muon`
[INFO] [stderr]   --> tests/roundtrip.rs:43:19
[INFO] [stderr]    |
[INFO] [stderr] 43 | fn dict_list() -> muon::Result<()> {
[INFO] [stderr]    |                   ^^^^ use of undeclared type or module `muon`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `muon`
[INFO] [stderr]   --> tests/roundtrip.rs:45:16
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let b: B = muon::from_str(&s)?;
[INFO] [stderr]    |                ^^^^ use of undeclared type or module `muon`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `muon`
[INFO] [stderr]   --> tests/roundtrip.rs:46:14
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let ss = muon::to_string(&b)?;
[INFO] [stderr]    |              ^^^^ use of undeclared type or module `muon`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 9 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `muon-rs`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "269d04fa562576a8a54eb28f6b56781a0a67be157855c089834b73db512c4b0e"`
[INFO] running `"docker" "rm" "-f" "269d04fa562576a8a54eb28f6b56781a0a67be157855c089834b73db512c4b0e"`
[INFO] [stdout] 269d04fa562576a8a54eb28f6b56781a0a67be157855c089834b73db512c4b0e