[INFO] updating cached repository https://github.com/buntine/pfnp-course
[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] b7cc87ac5307628e4f68dfe8d3a49e560bd248ed
[INFO] checking buntine/pfnp-course against master#bd0bacc694d7d8175804bb6f690cb846bfa4a9ee for pr-71665
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbuntine%2Fpfnp-course" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  87% (72/82)   
Checking out files:  89% (73/82)   
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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)   
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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 bd0bacc694d7d8175804bb6f690cb846bfa4a9ee
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-10/source/Cargo.toml
[INFO] crate git repo https://github.com/buntine/pfnp-course already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-10/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[INFO] the lockfile is outdated, regenerating it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" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "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] 67cec52ec00999f6698379c311e12f89bc28c0aae236bdc47c3ebfcd1656ee67
[INFO] running `"docker" "start" "-a" "67cec52ec00999f6698379c311e12f89bc28c0aae236bdc47c3ebfcd1656ee67"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking groupable v0.2.0
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking solicit v0.4.4
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking nickel v0.11.0
[INFO] [stderr]     Checking pfnp-course v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/main.rs:11:35
[INFO] [stderr]     |
[INFO] [stderr] 11  |       router.get("/course/:course", middleware! { |req, res|
[INFO] [stderr]     |  ___________________________________^
[INFO] [stderr] 12  | |         let mut data = HashMap::new();
[INFO] [stderr] 13  | |         let course = req.param("course").unwrap();
[INFO] [stderr] 14  | |
[INFO] [stderr] ...   |
[INFO] [stderr] 17  | |         return res.render(format!("views/{}.tpl", course), &data);
[INFO] [stderr] 18  | |     });
[INFO] [stderr]     | |_____^ unreachable expression
[INFO] [stderr]     | 
[INFO] [stderr]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nickel-0.11.0/src/macros/middleware.rs:117:41
[INFO] [stderr]     |
[INFO] [stderr] 117 |   macro_rules! as_block { ($b:block) => ( $b ) }
[INFO] [stderr]     |                                           -- any code following this expression is unreachable
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/main.rs:11:35
[INFO] [stderr]     |
[INFO] [stderr] 11  |       router.get("/course/:course", middleware! { |req, res|
[INFO] [stderr]     |  ___________________________________^
[INFO] [stderr] 12  | |         let mut data = HashMap::new();
[INFO] [stderr] 13  | |         let course = req.param("course").unwrap();
[INFO] [stderr] 14  | |
[INFO] [stderr] ...   |
[INFO] [stderr] 17  | |         return res.render(format!("views/{}.tpl", course), &data);
[INFO] [stderr] 18  | |     });
[INFO] [stderr]     | |_____^ unreachable expression
[INFO] [stderr]     | 
[INFO] [stderr]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nickel-0.11.0/src/macros/middleware.rs:117:41
[INFO] [stderr]     |
[INFO] [stderr] 117 |   macro_rules! as_block { ($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 (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     server.listen("127.0.0.1:6767");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     server.listen("127.0.0.1:6767");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.26s
[INFO] running `"docker" "inspect" "67cec52ec00999f6698379c311e12f89bc28c0aae236bdc47c3ebfcd1656ee67"`
[INFO] running `"docker" "rm" "-f" "67cec52ec00999f6698379c311e12f89bc28c0aae236bdc47c3ebfcd1656ee67"`
[INFO] [stdout] 67cec52ec00999f6698379c311e12f89bc28c0aae236bdc47c3ebfcd1656ee67