[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] testing buntine/pfnp-course against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbuntine%2Fpfnp-course" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/buntine/pfnp-course on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "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-6/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" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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[INFO] the lockfile is outdated, regenerating it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 `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b72ab7f231ad4642eb3fc10226c2c91e00f79091e0b0866fc4b572cc5666bc3
[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" "0b72ab7f231ad4642eb3fc10226c2c91e00f79091e0b0866fc4b572cc5666bc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b72ab7f231ad4642eb3fc10226c2c91e00f79091e0b0866fc4b572cc5666bc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b72ab7f231ad4642eb3fc10226c2c91e00f79091e0b0866fc4b572cc5666bc3", kill_on_drop: false }`
[INFO] [stdout] 0b72ab7f231ad4642eb3fc10226c2c91e00f79091e0b0866fc4b572cc5666bc3
[INFO] running `Command { std: "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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cad9fac83e568a83f7b43303505a393ba0ac0450cb785a2798908bae362e0c2b
[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" "cad9fac83e568a83f7b43303505a393ba0ac0450cb785a2798908bae362e0c2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling modifier v0.1.0
[INFO] [stderr]    Compiling groupable v0.2.0
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling tinyvec v1.1.0
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling hpack v0.2.0
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling plugin v0.2.6
[INFO] [stderr]    Compiling solicit v0.4.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.16
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling mustache v0.9.0
[INFO] [stderr]    Compiling nickel v0.11.0
[INFO] [stderr]    Compiling 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: 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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.56s
[INFO] running `Command { std: "docker" "inspect" "cad9fac83e568a83f7b43303505a393ba0ac0450cb785a2798908bae362e0c2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cad9fac83e568a83f7b43303505a393ba0ac0450cb785a2798908bae362e0c2b", kill_on_drop: false }`
[INFO] [stdout] cad9fac83e568a83f7b43303505a393ba0ac0450cb785a2798908bae362e0c2b
[INFO] running `Command { std: "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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb82346bd0ec2efb07ed8f3f45d54708d82f4fd8d3b8ee1829693757374aaf52
[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" "eb82346bd0ec2efb07ed8f3f45d54708d82f4fd8d3b8ee1829693757374aaf52", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "eb82346bd0ec2efb07ed8f3f45d54708d82f4fd8d3b8ee1829693757374aaf52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb82346bd0ec2efb07ed8f3f45d54708d82f4fd8d3b8ee1829693757374aaf52", kill_on_drop: false }`
[INFO] [stdout] eb82346bd0ec2efb07ed8f3f45d54708d82f4fd8d3b8ee1829693757374aaf52
[INFO] running `Command { std: "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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8928810579d66d24d7abb2afd12f51dcf42a23bb44eabf1fd7a0b2fc032ca81c
[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" "8928810579d66d24d7abb2afd12f51dcf42a23bb44eabf1fd7a0b2fc032ca81c", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/main.rs:11:35
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 11  |       router.get("/course/:course", middleware! { |req, res|
[INFO] [stdout] 
[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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/pfnp_course-37e0950ab09e4d14
[INFO] running `Command { std: "docker" "inspect" "8928810579d66d24d7abb2afd12f51dcf42a23bb44eabf1fd7a0b2fc032ca81c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8928810579d66d24d7abb2afd12f51dcf42a23bb44eabf1fd7a0b2fc032ca81c", kill_on_drop: false }`
[INFO] [stdout] 8928810579d66d24d7abb2afd12f51dcf42a23bb44eabf1fd7a0b2fc032ca81c