[INFO] cloning repository https://github.com/AlexanderElias/rust-nickel-mustache
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexanderElias%2Frust-nickel-mustache'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2735d081a4134d775e4e87e57b481adcf11dcac3
[INFO] testing AlexanderElias/rust-nickel-mustache against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexanderElias%2Frust-nickel-mustache" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlexanderElias/rust-nickel-mustache on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-7/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-7/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[INFO] the lockfile is outdated, regenerating it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" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f76ab780ac893ffe986bd07e98851558bb02f851802ce90755b70b545a53bcf6
[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" "f76ab780ac893ffe986bd07e98851558bb02f851802ce90755b70b545a53bcf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f76ab780ac893ffe986bd07e98851558bb02f851802ce90755b70b545a53bcf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f76ab780ac893ffe986bd07e98851558bb02f851802ce90755b70b545a53bcf6", kill_on_drop: false }`
[INFO] [stdout] f76ab780ac893ffe986bd07e98851558bb02f851802ce90755b70b545a53bcf6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64df02038f9d22360e604c9b7f9ba2d3bd23cb881d3e35569d6b331cefd42a49
[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" "64df02038f9d22360e604c9b7f9ba2d3bd23cb881d3e35569d6b331cefd42a49", kill_on_drop: false }`
[INFO] [stderr]    Compiling groupable v0.2.0
[INFO] [stderr]    Compiling mustache v0.9.0
[INFO] [stderr]    Compiling nickel v0.11.0
[INFO] [stderr]    Compiling nickel-template v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: `std::option::Option<&str>` doesn't implement `std::fmt::Display`
[INFO] [stdout]   --> src/main.rs:22:34
[INFO] [stdout]    |
[INFO] [stdout] 22 |             format!("Hello : {}",req.param("name"))
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^ `std::option::Option<&str>` cannot be formatted with the default formatter
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::fmt::Display` is not implemented for `std::option::Option<&str>`
[INFO] [stdout]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout]    = note: required by `std::fmt::Display::fmt`
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:28:21
[INFO] [stdout]     |
[INFO] [stdout] 28  |       server.get("/", middleware! { |req, res|
[INFO] [stdout]     |  _____________________^
[INFO] [stdout] 29  | |
[INFO] [stdout] 30  | |         let mut data = HashMap::<&str, &str>::new();
[INFO] [stdout] 31  | |         data.insert("title","Index");
[INFO] [stdout] 32  | |
[INFO] [stdout] 33  | |         return res.render("views/index.html", &data);
[INFO] [stdout] 34  | |     });
[INFO] [stdout]     | |_____^ unreachable expression
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nickel-0.11.0/src/macros/middleware.rs:117:41
[INFO] [stdout]     |
[INFO] [stdout] 117 |   macro_rules! as_block { ($b:block) => ( $b ) }
[INFO] [stdout]     |                                           -- any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nickel-template`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "64df02038f9d22360e604c9b7f9ba2d3bd23cb881d3e35569d6b331cefd42a49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64df02038f9d22360e604c9b7f9ba2d3bd23cb881d3e35569d6b331cefd42a49", kill_on_drop: false }`
[INFO] [stdout] 64df02038f9d22360e604c9b7f9ba2d3bd23cb881d3e35569d6b331cefd42a49
