[INFO] crate aoc_codegen 0.1.0 is already in cache
[INFO] extracting crate aoc_codegen 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/aoc_codegen/0.1.0
[INFO] extracting crate aoc_codegen 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/aoc_codegen/0.1.0
[INFO] validating manifest of aoc_codegen-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of aoc_codegen-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing aoc_codegen-0.1.0
[INFO] finished frobbing aoc_codegen-0.1.0
[INFO] frobbed toml for aoc_codegen-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/aoc_codegen/0.1.0/Cargo.toml
[INFO] started frobbing aoc_codegen-0.1.0
[INFO] finished frobbing aoc_codegen-0.1.0
[INFO] frobbed toml for aoc_codegen-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/aoc_codegen/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing aoc_codegen-0.1.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/aoc_codegen/0.1.0:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 57ed9de496527e70094761defbbcde5ce5149c2e4fa95e41d647cf37e1a8af4c
[INFO] running `"docker" "start" "-a" "57ed9de496527e70094761defbbcde5ce5149c2e4fa95e41d647cf37e1a8af4c"`
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling aoc_codegen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `FnArg`
[INFO] [stderr]  --> src/lib.rs:6:71
[INFO] [stderr]   |
[INFO] [stderr] 6 | use syn::{parse, parse::Parser, punctuated::Punctuated, Expr, ItemFn, FnArg};
[INFO] [stderr]   |                                                                       ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.77s
[INFO] running `"docker" "inspect" "57ed9de496527e70094761defbbcde5ce5149c2e4fa95e41d647cf37e1a8af4c"`
[INFO] running `"docker" "rm" "-f" "57ed9de496527e70094761defbbcde5ce5149c2e4fa95e41d647cf37e1a8af4c"`
[INFO] [stdout] 57ed9de496527e70094761defbbcde5ce5149c2e4fa95e41d647cf37e1a8af4c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/aoc_codegen/0.1.0:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 29421a985979c5b4e0b564430f7580f846f8b5e75fe5a5594cfead2266bd9b98
[INFO] running `"docker" "start" "-a" "29421a985979c5b4e0b564430f7580f846f8b5e75fe5a5594cfead2266bd9b98"`
[INFO] [stderr]    Compiling aoc_codegen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `FnArg`
[INFO] [stderr]  --> src/lib.rs:6:71
[INFO] [stderr]   |
[INFO] [stderr] 6 | use syn::{parse, parse::Parser, punctuated::Punctuated, Expr, ItemFn, FnArg};
[INFO] [stderr]   |                                                                       ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "29421a985979c5b4e0b564430f7580f846f8b5e75fe5a5594cfead2266bd9b98"`
[INFO] running `"docker" "rm" "-f" "29421a985979c5b4e0b564430f7580f846f8b5e75fe5a5594cfead2266bd9b98"`
[INFO] [stdout] 29421a985979c5b4e0b564430f7580f846f8b5e75fe5a5594cfead2266bd9b98
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/aoc_codegen/0.1.0:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 71af5be105f4904bc33d0356b43b36a488f39f02d4e68c851f48050aee1eb43b
[INFO] running `"docker" "start" "-a" "71af5be105f4904bc33d0356b43b36a488f39f02d4e68c851f48050aee1eb43b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/aoc_codegen-8d88e26b4beccef6
[INFO] [stderr]    Doc-tests aoc_codegen
[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] [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" "71af5be105f4904bc33d0356b43b36a488f39f02d4e68c851f48050aee1eb43b"`
[INFO] running `"docker" "rm" "-f" "71af5be105f4904bc33d0356b43b36a488f39f02d4e68c851f48050aee1eb43b"`
[INFO] [stdout] 71af5be105f4904bc33d0356b43b36a488f39f02d4e68c851f48050aee1eb43b