[INFO] cloning repository https://github.com/buntine/pfnp-course
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/buntine/pfnp-course" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbuntine%2Fpfnp-course", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbuntine%2Fpfnp-course'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7cc87ac5307628e4f68dfe8d3a49e560bd248ed
[INFO] checking buntine/pfnp-course against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbuntine%2Fpfnp-course" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  90% (74/82)   
Checking out files:  91% (75/82)   
Checking out files:  92% (76/82)   
Checking out files:  93% (77/82)   
Checking out files:  95% (78/82)   
Checking out files:  96% (79/82)   
Checking out files:  97% (80/82)   
Checking out files:  98% (81/82)   
Checking out files: 100% (82/82)   
Checking out files: 100% (82/82), done.
[INFO] validating manifest of git repo https://github.com/buntine/pfnp-course on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/buntine/pfnp-course
[INFO] finished tweaking git repo https://github.com/buntine/pfnp-course
[INFO] tweaked toml for git repo https://github.com/buntine/pfnp-course written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/buntine/pfnp-course already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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-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" "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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4940d3115437461e1a2a64f060ca61d9a211262e202714851a4aed249599a1b2
[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" "4940d3115437461e1a2a64f060ca61d9a211262e202714851a4aed249599a1b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4940d3115437461e1a2a64f060ca61d9a211262e202714851a4aed249599a1b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4940d3115437461e1a2a64f060ca61d9a211262e202714851a4aed249599a1b2", kill_on_drop: false }`
[INFO] [stdout] 4940d3115437461e1a2a64f060ca61d9a211262e202714851a4aed249599a1b2
[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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e13bb1e92f7a8466e320264aa5cf8e5bdf823106dfadf6955dc0ab0391b6afb
[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" "3e13bb1e92f7a8466e320264aa5cf8e5bdf823106dfadf6955dc0ab0391b6afb", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking serde_json v1.0.58
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking solicit v0.4.4
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking nickel v0.11.0
[INFO] [stderr]     Checking pfnp-course v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:11:35
[INFO] [stdout]     |
[INFO] [stdout] 11  |       router.get("/course/:course", middleware! { |req, res|
[INFO] [stdout]     |  ___________________________________^
[INFO] [stdout] 12  | |         let mut data = HashMap::new();
[INFO] [stdout] 13  | |         let course = req.param("course").unwrap();
[INFO] [stdout] 14  | |
[INFO] [stdout] ...   |
[INFO] [stdout] 17  | |         return res.render(format!("views/{}.tpl", course), &data);
[INFO] [stdout] 18  | |     });
[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) => ( $b ) }
[INFO] [stdout]     |                                           -- any code following this expression is unreachable
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:11:35
[INFO] [stdout]     |
[INFO] [stdout] 11  |       router.get("/course/:course", middleware! { |req, res|
[INFO] [stdout]     |  ___________________________________^
[INFO] [stdout] 12  | |         let mut data = HashMap::new();
[INFO] [stdout] 13  | |         let course = req.param("course").unwrap();
[INFO] [stdout] 14  | |
[INFO] [stdout] ...   |
[INFO] [stdout] 17  | |         return res.render(format!("views/{}.tpl", course), &data);
[INFO] [stdout] 18  | |     });
[INFO] [stdout]     | |_____^ unreachable expression
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nickel-0.11.0/src/macros/middleware.rs:117:41
[INFO] [stdout]     |
[INFO] [stdout] 117 |   macro_rules! as_block { ($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] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     server.listen("127.0.0.1:6767");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     server.listen("127.0.0.1:6767");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.87s
[INFO] running `Command { std: "docker" "inspect" "3e13bb1e92f7a8466e320264aa5cf8e5bdf823106dfadf6955dc0ab0391b6afb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e13bb1e92f7a8466e320264aa5cf8e5bdf823106dfadf6955dc0ab0391b6afb", kill_on_drop: false }`
[INFO] [stdout] 3e13bb1e92f7a8466e320264aa5cf8e5bdf823106dfadf6955dc0ab0391b6afb