[INFO] updating cached repository julienXX/toucan
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/julienXX/toucan
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/julienXX/toucan" "work/ex/beta-1.38-1/sources/1.37.0/gh/julienXX/toucan"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/julienXX/toucan'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/julienXX/toucan" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/julienXX/toucan"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/julienXX/toucan'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 766aa80a6d9bdda997308a17dd9d771c6c49c1dc
[INFO] sha for GitHub repo julienXX/toucan: 766aa80a6d9bdda997308a17dd9d771c6c49c1dc
[INFO] validating manifest of julienXX/toucan 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 julienXX/toucan 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 julienXX/toucan
[INFO] finished frobbing julienXX/toucan
[INFO] frobbed toml for julienXX/toucan written to work/ex/beta-1.38-1/sources/1.37.0/gh/julienXX/toucan/Cargo.toml
[INFO] started frobbing julienXX/toucan
[INFO] finished frobbing julienXX/toucan
[INFO] frobbed toml for julienXX/toucan written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/julienXX/toucan/Cargo.toml
[INFO] crate julienXX/toucan 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/julienXX/toucan/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 julienXX/toucan against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/julienXX/toucan:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 6b73602dc9a41ef2b6d042cbf7854e2d019e799d8e97620de09b03884e8315cb
[INFO] running `"docker" "start" "-a" "6b73602dc9a41ef2b6d042cbf7854e2d019e799d8e97620de09b03884e8315cb"`
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]    Compiling hoedown v6.0.0
[INFO] [stderr]    Compiling hashbrown v0.5.0
[INFO] [stderr]    Compiling pest v2.1.1
[INFO] [stderr]    Compiling pest_meta v2.1.1
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling handlebars v2.0.1
[INFO] [stderr]    Compiling toucan v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0277]: the trait bound `Document: serde::ser::Serialize` is not satisfied
[INFO] [stderr]    --> src/main.rs:131:16
[INFO] [stderr]     |
[INFO] [stderr] 131 |     handlebars.render("template", document).unwrap()
[INFO] [stderr]     |                ^^^^^^ the trait `serde::ser::Serialize` is not implemented for `Document`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `rustc_serialize::json::Json: serde::ser::Serialize` is not satisfied
[INFO] [stderr]    --> src/main.rs:151:16
[INFO] [stderr]     |
[INFO] [stderr] 151 |     handlebars.render("template", documents).unwrap()
[INFO] [stderr]     |                ^^^^^^ the trait `serde::ser::Serialize` is not implemented for `rustc_serialize::json::Json`
[INFO] [stderr]     |
[INFO] [stderr]     = note: required because of the requirements on the impl of `serde::ser::Serialize` for `std::collections::BTreeMap<std::string::String, rustc_serialize::json::Json>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `toucan`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6b73602dc9a41ef2b6d042cbf7854e2d019e799d8e97620de09b03884e8315cb"`
[INFO] running `"docker" "rm" "-f" "6b73602dc9a41ef2b6d042cbf7854e2d019e799d8e97620de09b03884e8315cb"`
[INFO] [stdout] 6b73602dc9a41ef2b6d042cbf7854e2d019e799d8e97620de09b03884e8315cb