[INFO] crate todo-txt 1.3.0 is already in cache
[INFO] testing todo-txt-1.3.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate todo-txt 1.3.0 into work/builds/worker-5/source
[INFO] validating manifest of crates.io crate todo-txt 1.3.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate todo-txt 1.3.0
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate todo-txt 1.3.0
[INFO] tweaked toml for crates.io crate todo-txt 1.3.0 written to work/builds/worker-5/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 00b069c92f4d7b829273098e8191e10bc08261cbee40a6b2d475e5e832daf5a2
[INFO] running `"docker" "start" "-a" "00b069c92f4d7b829273098e8191e10bc08261cbee40a6b2d475e5e832daf5a2"`
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling nom v5.0.1
[INFO] [stderr]    Compiling lexical-core v0.4.6
[INFO] [stderr]    Compiling todo-txt v1.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.20s
[INFO] running `"docker" "inspect" "00b069c92f4d7b829273098e8191e10bc08261cbee40a6b2d475e5e832daf5a2"`
[INFO] running `"docker" "rm" "-f" "00b069c92f4d7b829273098e8191e10bc08261cbee40a6b2d475e5e832daf5a2"`
[INFO] [stdout] 00b069c92f4d7b829273098e8191e10bc08261cbee40a6b2d475e5e832daf5a2
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 534de1283b8edaa1c6305a647b448d7830bdf180517588769dc7694d3089e51b
[INFO] running `"docker" "start" "-a" "534de1283b8edaa1c6305a647b448d7830bdf180517588769dc7694d3089e51b"`
[INFO] [stderr]    Compiling todo-txt v1.3.0 (/opt/rustwide/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" "534de1283b8edaa1c6305a647b448d7830bdf180517588769dc7694d3089e51b"`
[INFO] running `"docker" "rm" "-f" "534de1283b8edaa1c6305a647b448d7830bdf180517588769dc7694d3089e51b"`
[INFO] [stdout] 534de1283b8edaa1c6305a647b448d7830bdf180517588769dc7694d3089e51b