[INFO] crate mustache_view 0.1.0 is already in cache
[INFO] testing mustache_view-0.1.0 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate mustache_view 0.1.0 into work/builds/worker-8/source
[INFO] validating manifest of crates.io crate mustache_view 0.1.0 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mustache_view 0.1.0
[INFO] finished tweaking crates.io crate mustache_view 0.1.0
[INFO] tweaked toml for crates.io crate mustache_view 0.1.0 written to work/builds/worker-8/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-8/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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 30c036d5b19127201a871e684c2c8c5c7989e41681e5e61708843a3feaf6d9ba
[INFO] running `"docker" "start" "-a" "30c036d5b19127201a871e684c2c8c5c7989e41681e5e61708843a3feaf6d9ba"`
[INFO] [stderr]    Compiling mustache v0.9.0
[INFO] [stderr]    Compiling mustache_view v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `T: serde::ser::Serialize` is not satisfied
[INFO] [stderr]   --> src/lib.rs:16:46
[INFO] [stderr]    |
[INFO] [stderr] 16 |                 template.render(&mut output, &data).unwrap();
[INFO] [stderr]    |                                              ^^^^^ the trait `serde::ser::Serialize` is not implemented for `T`
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding a `where T: serde::ser::Serialize` bound
[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 `mustache_view`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "30c036d5b19127201a871e684c2c8c5c7989e41681e5e61708843a3feaf6d9ba"`
[INFO] running `"docker" "rm" "-f" "30c036d5b19127201a871e684c2c8c5c7989e41681e5e61708843a3feaf6d9ba"`
[INFO] [stdout] 30c036d5b19127201a871e684c2c8c5c7989e41681e5e61708843a3feaf6d9ba