[INFO] cloning repository https://github.com/AlexanderElias/rust-nickel-mustache
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlexanderElias/rust-nickel-mustache" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexanderElias%2Frust-nickel-mustache"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexanderElias%2Frust-nickel-mustache'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2735d081a4134d775e4e87e57b481adcf11dcac3
[INFO] checking AlexanderElias/rust-nickel-mustache against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexanderElias%2Frust-nickel-mustache" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlexanderElias/rust-nickel-mustache on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/AlexanderElias/rust-nickel-mustache
[INFO] finished tweaking git repo https://github.com/AlexanderElias/rust-nickel-mustache
[INFO] tweaked toml for git repo https://github.com/AlexanderElias/rust-nickel-mustache written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/AlexanderElias/rust-nickel-mustache already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "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] d4a3a9ad6c4f058e78b17cc6283b9432858fc4be9d02302341f656eabcf7f007
[INFO] running `"docker" "start" "-a" "d4a3a9ad6c4f058e78b17cc6283b9432858fc4be9d02302341f656eabcf7f007"`
[INFO] [stderr]     Checking groupable v0.2.0
[INFO] [stderr]     Checking nickel v0.11.0
[INFO] [stderr]     Checking nickel-template v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0277]: `std::option::Option<&str>` doesn't implement `std::fmt::Display`
[INFO] [stderr]   --> src/main.rs:22:34
[INFO] [stderr]    |
[INFO] [stderr] 22 |             format!("Hello : {}",req.param("name"))
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^ `std::option::Option<&str>` cannot be formatted with the default formatter
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::fmt::Display` is not implemented for `std::option::Option<&str>`
[INFO] [stderr]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stderr]    = note: required by `std::fmt::Display::fmt`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/main.rs:28:21
[INFO] [stderr]    |
[INFO] [stderr] 28 |       server.get("/", middleware! { |req, res|
[INFO] [stderr]    |  _____________________^
[INFO] [stderr] 29 | |
[INFO] [stderr] 30 | |         let mut data = HashMap::<&str, &str>::new();
[INFO] [stderr] 31 | |         data.insert("title","Index");
[INFO] [stderr] 32 | |
[INFO] [stderr] 33 | |         return res.render("views/index.html", &data);
[INFO] [stderr] 34 | |     });
[INFO] [stderr]    | |_____^ unreachable expression
[INFO] [stderr]    | 
[INFO] [stderr]   ::: <::nickel::macros::middleware::as_block macros>:1:19
[INFO] [stderr]    |
[INFO] [stderr] 1  |   ($ b : block) => ($ b)
[INFO] [stderr]    |                     --- any code following this expression is unreachable
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[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 `nickel-template`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0277]: `std::option::Option<&str>` doesn't implement `std::fmt::Display`
[INFO] [stderr]   --> src/main.rs:22:34
[INFO] [stderr]    |
[INFO] [stderr] 22 |             format!("Hello : {}",req.param("name"))
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^ `std::option::Option<&str>` cannot be formatted with the default formatter
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::fmt::Display` is not implemented for `std::option::Option<&str>`
[INFO] [stderr]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stderr]    = note: required by `std::fmt::Display::fmt`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/main.rs:28:21
[INFO] [stderr]    |
[INFO] [stderr] 28 |       server.get("/", middleware! { |req, res|
[INFO] [stderr]    |  _____________________^
[INFO] [stderr] 29 | |
[INFO] [stderr] 30 | |         let mut data = HashMap::<&str, &str>::new();
[INFO] [stderr] 31 | |         data.insert("title","Index");
[INFO] [stderr] 32 | |
[INFO] [stderr] 33 | |         return res.render("views/index.html", &data);
[INFO] [stderr] 34 | |     });
[INFO] [stderr]    | |_____^ unreachable expression
[INFO] [stderr]    | 
[INFO] [stderr]   ::: <::nickel::macros::middleware::as_block macros>:1:19
[INFO] [stderr]    |
[INFO] [stderr] 1  |   ($ b : block) => ($ b)
[INFO] [stderr]    |                     --- any code following this expression is unreachable
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[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 `nickel-template`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d4a3a9ad6c4f058e78b17cc6283b9432858fc4be9d02302341f656eabcf7f007"`
[INFO] running `"docker" "rm" "-f" "d4a3a9ad6c4f058e78b17cc6283b9432858fc4be9d02302341f656eabcf7f007"`
[INFO] [stdout] d4a3a9ad6c4f058e78b17cc6283b9432858fc4be9d02302341f656eabcf7f007