[INFO] cloning repository https://github.com/onthestairs/rt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/onthestairs/rt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fonthestairs%2Frt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fonthestairs%2Frt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e834b9296d14c5619d04c44232103a1cf00f132
[INFO] checking onthestairs/rt against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fonthestairs%2Frt" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/onthestairs/rt on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/onthestairs/rt
[INFO] finished tweaking git repo https://github.com/onthestairs/rt
[INFO] tweaked toml for git repo https://github.com/onthestairs/rt written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/onthestairs/rt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1d4a20fc7fbc48f43bbca6cb6422ba6a4dd6565433037ebd00ab2a8ca170b22
[INFO] running `Command { std: "docker" "start" "-a" "d1d4a20fc7fbc48f43bbca6cb6422ba6a4dd6565433037ebd00ab2a8ca170b22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1d4a20fc7fbc48f43bbca6cb6422ba6a4dd6565433037ebd00ab2a8ca170b22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1d4a20fc7fbc48f43bbca6cb6422ba6a4dd6565433037ebd00ab2a8ca170b22", kill_on_drop: false }`
[INFO] [stdout] d1d4a20fc7fbc48f43bbca6cb6422ba6a4dd6565433037ebd00ab2a8ca170b22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 626ef5b57804a26c8e47360a2e6f75e84410e1e020a008460b1cb59a7f316acf
[INFO] running `Command { std: "docker" "start" "-a" "626ef5b57804a26c8e47360a2e6f75e84410e1e020a008460b1cb59a7f316acf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking either v1.7.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand;
[INFO] [stdout]   |     ^^^^ the item `rand` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand;
[INFO] [stdout]   |     ^^^^ the item `rand` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_0`
[INFO] [stdout]    --> src/hittable.rs:162:28
[INFO] [stdout]     |
[INFO] [stdout] 162 |     fn bounding_box(&self, t_0: f64, t_1: f64) -> Option<AABB> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_t_0`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_1`
[INFO] [stdout]    --> src/hittable.rs:162:38
[INFO] [stdout]     |
[INFO] [stdout] 162 |     fn bounding_box(&self, t_0: f64, t_1: f64) -> Option<AABB> {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_t_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_0`
[INFO] [stdout]    --> src/hittable.rs:162:28
[INFO] [stdout]     |
[INFO] [stdout] 162 |     fn bounding_box(&self, t_0: f64, t_1: f64) -> Option<AABB> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_t_0`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_1`
[INFO] [stdout]    --> src/hittable.rs:162:38
[INFO] [stdout]     |
[INFO] [stdout] 162 |     fn bounding_box(&self, t_0: f64, t_1: f64) -> Option<AABB> {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_t_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_scene_bvh` is never used
[INFO] [stdout]   --> src/main.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn random_scene_bvh() -> BVHNode {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/bvh.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl BVHNode {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 16 |     pub fn new(hittable_list: Vec<Arc<dyn Hittable + Send + Sync>>, t_0: f64, t_1: f64) -> BVHNode {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Axis` is never used
[INFO] [stdout]   --> src/bvh.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum Axis {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_axis` is never used
[INFO] [stdout]   --> src/bvh.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn random_axis() -> Axis {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `box_compare` is never used
[INFO] [stdout]   --> src/bvh.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn box_compare(
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_bvh_node` is never used
[INFO] [stdout]   --> src/bvh.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn make_bvh_node(
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_gradient` is never used
[INFO] [stdout]   --> src/image.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn generate_gradient(width: u64, height: u64) -> Vec<Vec<Colour>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/texture.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Checkers {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 31 |     pub fn new<S: Texture + Send + Sync + 'static, T: Texture + Send + Sync + 'static>(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_scene_bvh` is never used
[INFO] [stdout]   --> src/main.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn random_scene_bvh() -> BVHNode {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/bvh.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl BVHNode {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 16 |     pub fn new(hittable_list: Vec<Arc<dyn Hittable + Send + Sync>>, t_0: f64, t_1: f64) -> BVHNode {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Axis` is never used
[INFO] [stdout]   --> src/bvh.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 | enum Axis {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_axis` is never used
[INFO] [stdout]   --> src/bvh.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn random_axis() -> Axis {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `box_compare` is never used
[INFO] [stdout]   --> src/bvh.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn box_compare(
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_bvh_node` is never used
[INFO] [stdout]   --> src/bvh.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn make_bvh_node(
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_gradient` is never used
[INFO] [stdout]   --> src/image.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn generate_gradient(width: u64, height: u64) -> Vec<Vec<Colour>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/texture.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Checkers {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 31 |     pub fn new<S: Texture + Send + Sync + 'static, T: Texture + Send + Sync + 'static>(
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.20s
[INFO] running `Command { std: "docker" "inspect" "626ef5b57804a26c8e47360a2e6f75e84410e1e020a008460b1cb59a7f316acf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "626ef5b57804a26c8e47360a2e6f75e84410e1e020a008460b1cb59a7f316acf", kill_on_drop: false }`
[INFO] [stdout] 626ef5b57804a26c8e47360a2e6f75e84410e1e020a008460b1cb59a7f316acf