[INFO] updating cached repository https://github.com/julienXX/toucan
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 766aa80a6d9bdda997308a17dd9d771c6c49c1dc
[INFO] checking julienXX/toucan against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjulienXX%2Ftoucan" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/julienXX/toucan on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/julienXX/toucan
[INFO] finished tweaking git repo https://github.com/julienXX/toucan
[INFO] tweaked toml for git repo https://github.com/julienXX/toucan written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/julienXX/toucan already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-4/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90cc4a6f89437fca2f0ed1b12e4726b9822743dd252b39511b01c06241bc9bfe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "90cc4a6f89437fca2f0ed1b12e4726b9822743dd252b39511b01c06241bc9bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90cc4a6f89437fca2f0ed1b12e4726b9822743dd252b39511b01c06241bc9bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90cc4a6f89437fca2f0ed1b12e4726b9822743dd252b39511b01c06241bc9bfe", kill_on_drop: false }`
[INFO] [stdout] 90cc4a6f89437fca2f0ed1b12e4726b9822743dd252b39511b01c06241bc9bfe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db889b6926f468682e90cff6fb72831454ab120b7bee21d86f93d5c4400bf624
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "db889b6926f468682e90cff6fb72831454ab120b7bee21d86f93d5c4400bf624", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.112
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking bitflags v0.5.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling hoedown v6.0.0
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking handlebars v3.1.0
[INFO] [stderr]     Checking toucan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `Document: serde::ser::Serialize` is not satisfied
[INFO] [stdout]    --> src/main.rs:131:35
[INFO] [stdout]     |
[INFO] [stdout] 131 |     handlebars.render("template", document).unwrap()
[INFO] [stdout]     |                                   ^^^^^^^^ the trait `serde::ser::Serialize` is not implemented for `Document`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `rustc_serialize::json::Json: serde::ser::Serialize` is not satisfied
[INFO] [stdout]    --> src/main.rs:151:35
[INFO] [stdout]     |
[INFO] [stdout] 151 |     handlebars.render("template", documents).unwrap()
[INFO] [stdout]     |                                   ^^^^^^^^^ the trait `serde::ser::Serialize` is not implemented for `rustc_serialize::json::Json`
[INFO] [stdout]     |
[INFO] [stdout]     = 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] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Document: serde::ser::Serialize` is not satisfied
[INFO] [stdout]    --> src/main.rs:131:35
[INFO] [stdout]     |
[INFO] [stdout] 131 |     handlebars.render("template", document).unwrap()
[INFO] [stdout]     |                                   ^^^^^^^^ the trait `serde::ser::Serialize` is not implemented for `Document`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `rustc_serialize::json::Json: serde::ser::Serialize` is not satisfied
[INFO] [stdout]    --> src/main.rs:151:35
[INFO] [stdout]     |
[INFO] [stdout] 151 |     handlebars.render("template", documents).unwrap()
[INFO] [stdout]     |                                   ^^^^^^^^^ the trait `serde::ser::Serialize` is not implemented for `rustc_serialize::json::Json`
[INFO] [stdout]     |
[INFO] [stdout]     = 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] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `toucan`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "db889b6926f468682e90cff6fb72831454ab120b7bee21d86f93d5c4400bf624", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db889b6926f468682e90cff6fb72831454ab120b7bee21d86f93d5c4400bf624", kill_on_drop: false }`
[INFO] [stdout] db889b6926f468682e90cff6fb72831454ab120b7bee21d86f93d5c4400bf624