[INFO] updating cached repository fisherdarling/cargo-light
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fisherdarling/cargo-light
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fisherdarling/cargo-light" "work/ex/beta-1.38-1/sources/1.37.0/gh/fisherdarling/cargo-light"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/fisherdarling/cargo-light'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fisherdarling/cargo-light" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fisherdarling/cargo-light"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fisherdarling/cargo-light'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e64fddc5f452a159504bc9c505c8743d29baf194
[INFO] sha for GitHub repo fisherdarling/cargo-light: e64fddc5f452a159504bc9c505c8743d29baf194
[INFO] validating manifest of fisherdarling/cargo-light 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 fisherdarling/cargo-light 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 fisherdarling/cargo-light
[INFO] finished frobbing fisherdarling/cargo-light
[INFO] frobbed toml for fisherdarling/cargo-light written to work/ex/beta-1.38-1/sources/1.37.0/gh/fisherdarling/cargo-light/Cargo.toml
[INFO] started frobbing fisherdarling/cargo-light
[INFO] finished frobbing fisherdarling/cargo-light
[INFO] frobbed toml for fisherdarling/cargo-light written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fisherdarling/cargo-light/Cargo.toml
[INFO] crate fisherdarling/cargo-light 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 fisherdarling/cargo-light 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/gh/fisherdarling/cargo-light:/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] d1747f246ff86e2b50a7e2bf978d55fa2863a29a54bfa1c51b2a588fe2d75cf3
[INFO] running `"docker" "start" "-a" "d1747f246ff86e2b50a7e2bf978d55fa2863a29a54bfa1c51b2a588fe2d75cf3"`
[INFO] [stderr]    Compiling colored v1.6.1
[INFO] [stderr]    Compiling quote v0.6.4
[INFO] [stderr]    Compiling syn v0.14.6
[INFO] [stderr]    Compiling cargo-light v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0599]: no method named `start` found for type `proc_macro2::Span` in the current scope
[INFO] [stderr]    --> src/main.rs:142:28
[INFO] [stderr]     |
[INFO] [stderr] 142 |             i.ident.span().start().line,
[INFO] [stderr]     |                            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `start` found for type `proc_macro2::Span` in the current scope
[INFO] [stderr]    --> src/main.rs:152:32
[INFO] [stderr]     |
[INFO] [stderr] 152 |             i.sig.ident.span().start().line,
[INFO] [stderr]     |                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `start` found for type `proc_macro2::Span` in the current scope
[INFO] [stderr]    --> src/main.rs:173:48
[INFO] [stderr]     |
[INFO] [stderr] 173 |                     ids.get(0).unwrap().span().start().line
[INFO] [stderr]     |                                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `start` found for type `proc_macro2::Span` in the current scope
[INFO] [stderr]    --> src/main.rs:180:37
[INFO] [stderr]     |
[INFO] [stderr] 180 |                 let line = i.span().start().line;
[INFO] [stderr]     |                                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `cargo-light`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d1747f246ff86e2b50a7e2bf978d55fa2863a29a54bfa1c51b2a588fe2d75cf3"`
[INFO] running `"docker" "rm" "-f" "d1747f246ff86e2b50a7e2bf978d55fa2863a29a54bfa1c51b2a588fe2d75cf3"`
[INFO] [stdout] d1747f246ff86e2b50a7e2bf978d55fa2863a29a54bfa1c51b2a588fe2d75cf3