[INFO] updating cached repository https://github.com/softprops/johan
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c2fb62570bbcc377ae7dc3efe794ef7cb5b06563
[INFO] checking softprops/johan against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoftprops%2Fjohan" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/softprops/johan on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/softprops/johan
[INFO] finished tweaking git repo https://github.com/softprops/johan
[INFO] tweaked toml for git repo https://github.com/softprops/johan written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/softprops/johan already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/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[INFO] the lockfile is outdated, regenerating it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 `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 678170720b502d3bbc30028e6d994dccd7c69b7b7637094ec9cafcf4c48aaeb6
[INFO] running `"docker" "start" "-a" "678170720b502d3bbc30028e6d994dccd7c69b7b7637094ec9cafcf4c48aaeb6"`
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking atty v0.1.2
[INFO] [stderr]     Checking serde_json v0.7.4
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking handlebars v0.16.1
[INFO] [stderr] error[E0252]: the name `ToJson` is defined multiple times
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/handlebars-0.16.1/src/registry.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use serialize::json::ToJson;
[INFO] [stderr]   |     ----------------------- previous import of the trait `ToJson` here
[INFO] [stderr] 8 | #[cfg(feature = "serde_type")]
[INFO] [stderr] 9 | use serde::ser::Serialize as ToJson;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `ToJson` reimported here
[INFO] [stderr]   |
[INFO] [stderr]   = note: `ToJson` must be defined only once in the type namespace of this module
[INFO] [stderr] help: you can use `as` to change the binding name of the import
[INFO] [stderr]   |
[INFO] [stderr] 9 | use serde::ser::Serialize as OtherToJson;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0252]: the name `Json` is defined multiple times
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/handlebars-0.16.1/src/render.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | use serialize::json::Json;
[INFO] [stderr]    |     --------------------- previous import of the type `Json` here
[INFO] [stderr] 9  | #[cfg(feature = "serde_type")]
[INFO] [stderr] 10 | use serde_json::value::Value as Json;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `Json` reimported here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Json` must be defined only once in the type namespace of this module
[INFO] [stderr] help: you can use `as` to change the binding name of the import
[INFO] [stderr]    |
[INFO] [stderr] 10 | use serde_json::value::Value as OtherJson;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0252]: the name `Json` is defined multiple times
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/handlebars-0.16.1/src/helpers/helper_each.rs:4:31
[INFO] [stderr]   |
[INFO] [stderr] 2 | use serialize::json::{Json, ToJson};
[INFO] [stderr]   |                       ---- previous import of the type `Json` here
[INFO] [stderr] 3 | #[cfg(feature = "serde_type")]
[INFO] [stderr] 4 | use serde_json::value::{self, Value as Json};
[INFO] [stderr]   |                               ^^^^^^^^^^^^^ `Json` reimported here
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Json` must be defined only once in the type namespace of this module
[INFO] [stderr] help: you can use `as` to change the binding name of the import
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde_json::value::{self, Value as OtherJson};
[INFO] [stderr]   |                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0252]: the name `Json` is defined multiple times
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/handlebars-0.16.1/src/context.rs:7:31
[INFO] [stderr]   |
[INFO] [stderr] 2 | use serialize::json::{Json, ToJson};
[INFO] [stderr]   |                       ---- previous import of the type `Json` here
[INFO] [stderr] ...
[INFO] [stderr] 7 | use serde_json::value::{self, Value as Json};
[INFO] [stderr]   |                               ^^^^^^^^^^^^^ `Json` reimported here
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Json` must be defined only once in the type namespace of this module
[INFO] [stderr] help: you can use `as` to change the binding name of the import
[INFO] [stderr]   |
[INFO] [stderr] 7 | use serde_json::value::{self, Value as OtherJson};
[INFO] [stderr]   |                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0201]: duplicate definitions with name `call`:
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/handlebars-0.16.1/src/helpers/helper_each.rs:80:5
[INFO] [stderr]     |
[INFO] [stderr] 17  | /     fn call(&self,
[INFO] [stderr] 18  | |             c: &Context,
[INFO] [stderr] 19  | |             h: &Helper,
[INFO] [stderr] 20  | |             r: &Registry,
[INFO] [stderr] ...   |
[INFO] [stderr] 76  | |         }
[INFO] [stderr] 77  | |     }
[INFO] [stderr]     | |_____- previous definition of `call` here
[INFO] [stderr] ...
[INFO] [stderr] 80  | /     fn call(&self,
[INFO] [stderr] 81  | |             c: &Context,
[INFO] [stderr] 82  | |             h: &Helper,
[INFO] [stderr] 83  | |             r: &Registry,
[INFO] [stderr] ...   |
[INFO] [stderr] 139 | |         }
[INFO] [stderr] 140 | |     }
[INFO] [stderr]     | |_____^ duplicate definition
[INFO] [stderr] 
[INFO] [stderr] error[E0201]: duplicate definitions with name `wraps`:
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/handlebars-0.16.1/src/context.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 73 | /     pub fn wraps<T: ToJson>(e: &T) -> Context {
[INFO] [stderr] 74 | |         Context { data: e.to_json() }
[INFO] [stderr] 75 | |     }
[INFO] [stderr]    | |_____- previous definition of `wraps` here
[INFO] [stderr] ...
[INFO] [stderr] 79 | /     pub fn wraps<T: Serialize>(e: &T) -> Context {
[INFO] [stderr] 80 | |         Context { data: value::to_value(e) }
[INFO] [stderr] 81 | |     }
[INFO] [stderr]    | |_____^ duplicate definition
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0201, E0252.
[INFO] [stderr] For more information about an error, try `rustc --explain E0201`.
[INFO] [stderr] error: could not compile `handlebars`.
[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] [stderr] error: build failed
[INFO] running `"docker" "inspect" "678170720b502d3bbc30028e6d994dccd7c69b7b7637094ec9cafcf4c48aaeb6"`
[INFO] running `"docker" "rm" "-f" "678170720b502d3bbc30028e6d994dccd7c69b7b7637094ec9cafcf4c48aaeb6"`
[INFO] [stdout] 678170720b502d3bbc30028e6d994dccd7c69b7b7637094ec9cafcf4c48aaeb6
