[INFO] cloning repository https://github.com/jakobbeckmann/chans_algorithm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jakobbeckmann/chans_algorithm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakobbeckmann%2Fchans_algorithm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakobbeckmann%2Fchans_algorithm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fef9a303f1fd0c2b000af908aff6f956aa224784
[INFO] checking jakobbeckmann/chans_algorithm against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakobbeckmann%2Fchans_algorithm" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jakobbeckmann/chans_algorithm on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jakobbeckmann/chans_algorithm
[INFO] finished tweaking git repo https://github.com/jakobbeckmann/chans_algorithm
[INFO] tweaked toml for git repo https://github.com/jakobbeckmann/chans_algorithm written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jakobbeckmann/chans_algorithm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3020d00989598232764740b5ef6cc7a84744ac093f54297e75ba0a7df7c86937
[INFO] running `Command { std: "docker" "start" "-a" "3020d00989598232764740b5ef6cc7a84744ac093f54297e75ba0a7df7c86937", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3020d00989598232764740b5ef6cc7a84744ac093f54297e75ba0a7df7c86937", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3020d00989598232764740b5ef6cc7a84744ac093f54297e75ba0a7df7c86937", kill_on_drop: false }`
[INFO] [stdout] 3020d00989598232764740b5ef6cc7a84744ac093f54297e75ba0a7df7c86937
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95c525349100ae4c58437ca4665cbd3b384bbe67dd62651fad097273fe371302
[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" "95c525349100ae4c58437ca4665cbd3b384bbe67dd62651fad097273fe371302", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.32
[INFO] [stderr]     Checking serde v1.0.16
[INFO] [stderr]    Compiling cc v1.0.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking linked-hash-map v0.4.2
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking crossbeam v0.2.10
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking humantime v1.0.0
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]    Compiling serde_derive_internals v0.16.0
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking csv-core v0.1.3
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking rand v0.3.17
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.16
[INFO] [stderr]     Checking chrono v0.3.0
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]     Checking serde_yaml v0.7.1
[INFO] [stderr]     Checking serde_json v1.0.4
[INFO] [stderr]     Checking serde-value v0.5.1
[INFO] [stderr]     Checking csv v1.0.0-beta.5
[INFO] [stderr]     Checking log4rs v0.7.0
[INFO] [stderr]     Checking chan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/util/chan.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]   --> src/util/chan.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     for idx in 0..parallelism {
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]   --> src/util/chan.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     for idx in 0..parallelism {
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/io.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     writeln!(file, "{},{}", "x value", "y value");
[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]    = 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/io.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             writeln!(file, "{},{}", x, y);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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/io.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     writeln!(file, "{},{}", "x value", "y value");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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/io.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |         writeln!(file, "{},{}", point.x, point.y);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[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/io.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     writeln!(file, "{},{}", "x value", "y value");
[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]    = 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/io.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             writeln!(file, "{},{}", x, y);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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/io.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     writeln!(file, "{},{}", "x value", "y value");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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/io.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |         writeln!(file, "{},{}", point.x, point.y);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `hull` is never read
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut hull: Vec<Point> = Vec::with_capacity(1_000_000);   // TODO: this could be made smaller maybe
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `hull` is never read
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut hull: Vec<Point> = Vec::with_capacity(1_000_000);   // TODO: this could be made smaller maybe
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.23s
[INFO] running `Command { std: "docker" "inspect" "95c525349100ae4c58437ca4665cbd3b384bbe67dd62651fad097273fe371302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95c525349100ae4c58437ca4665cbd3b384bbe67dd62651fad097273fe371302", kill_on_drop: false }`
[INFO] [stdout] 95c525349100ae4c58437ca4665cbd3b384bbe67dd62651fad097273fe371302