[INFO] crate todo-txt 1.3.0 is already in cache
[INFO] extracting crate todo-txt 1.3.0 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/todo-txt/1.3.0
[INFO] extracting crate todo-txt 1.3.0 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/todo-txt/1.3.0
[INFO] validating manifest of todo-txt-1.3.0 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of todo-txt-1.3.0 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing todo-txt-1.3.0
[INFO] removed 1 missing examples
[INFO] finished frobbing todo-txt-1.3.0
[INFO] frobbed toml for todo-txt-1.3.0 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/todo-txt/1.3.0/Cargo.toml
[INFO] started frobbing todo-txt-1.3.0
[INFO] removed 1 missing examples
[INFO] finished frobbing todo-txt-1.3.0
[INFO] frobbed toml for todo-txt-1.3.0 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/todo-txt/1.3.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking todo-txt-1.3.0 against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-4/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/todo-txt/1.3.0:/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=forbid" "-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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] de5907611d6fa2cecc73b4b799067b74db3948d03e61dd238ea92305f65d23e1
[INFO] running `"docker" "start" "-a" "de5907611d6fa2cecc73b4b799067b74db3948d03e61dd238ea92305f65d23e1"`
[INFO] [stderr]     Checking todo-txt v1.3.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0277]: the trait bound `todo_txt::task::simple::Simple: serde::ser::Serialize` is not satisfied
[INFO] [stderr]  --> examples/serialization.rs:8:16
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let json = serde_json::to_string(&task);
[INFO] [stderr]   |                ^^^^^^^^^^^^^^^^^^^^^ the trait `serde::ser::Serialize` is not implemented for `todo_txt::task::simple::Simple`
[INFO] [stderr]   |
[INFO] [stderr]   = note: required because of the requirements on the impl of `serde::ser::Serialize` for `std::result::Result<todo_txt::task::simple::Simple, ()>`
[INFO] [stderr]   = note: required by `serde_json::ser::to_string`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `todo-txt`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "de5907611d6fa2cecc73b4b799067b74db3948d03e61dd238ea92305f65d23e1"`
[INFO] running `"docker" "rm" "-f" "de5907611d6fa2cecc73b4b799067b74db3948d03e61dd238ea92305f65d23e1"`
[INFO] [stdout] de5907611d6fa2cecc73b4b799067b74db3948d03e61dd238ea92305f65d23e1