[INFO] cloning repository https://github.com/lennyferguson/RustRay
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lennyferguson/RustRay" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flennyferguson%2FRustRay", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flennyferguson%2FRustRay'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eceacb3323205be40ac12bcc8f8de6345ee860a1
[INFO] testing lennyferguson/RustRay against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flennyferguson%2FRustRay" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lennyferguson/RustRay on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lennyferguson/RustRay
[INFO] finished tweaking git repo https://github.com/lennyferguson/RustRay
[INFO] tweaked toml for git repo https://github.com/lennyferguson/RustRay written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/lennyferguson/RustRay already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded image v0.17.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9db84de2e496448f8279b8d2c1b76b5f8b411b6da65932dbaec410db2d016d1
[INFO] running `Command { std: "docker" "start" "-a" "f9db84de2e496448f8279b8d2c1b76b5f8b411b6da65932dbaec410db2d016d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9db84de2e496448f8279b8d2c1b76b5f8b411b6da65932dbaec410db2d016d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9db84de2e496448f8279b8d2c1b76b5f8b411b6da65932dbaec410db2d016d1", kill_on_drop: false }`
[INFO] [stdout] f9db84de2e496448f8279b8d2c1b76b5f8b411b6da65932dbaec410db2d016d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd2adb32945fd0ae299fb5288dbaf8d8dca57a468df4a1f772dec74d48107c55
[INFO] running `Command { std: "docker" "start" "-a" "dd2adb32945fd0ae299fb5288dbaf8d8dca57a468df4a1f772dec74d48107c55", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling gif v0.9.2
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling inflate v0.3.4
[INFO] [stderr]    Compiling deflate v0.7.19
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling num_cpus v1.9.0
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling nalgebra v0.5.1
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling image v0.17.0
[INFO] [stderr]    Compiling rust_ray v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:178:33
[INFO] [stdout]     |
[INFO] [stdout] 178 |     static ref SURFACES:Vec<Box<Surface>> = vec!(
[INFO] [stdout]     |                                 ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:178:33
[INFO] [stdout]     |
[INFO] [stdout] 178 |     static ref SURFACES:Vec<Box<Surface>> = vec!(
[INFO] [stdout]     |                                 ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:421:44
[INFO] [stdout]     |
[INFO] [stdout] 421 |             let mut near_surf: Option<&Box<Surface>> = None;
[INFO] [stdout]     |                                            ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:494:36
[INFO] [stdout]     |
[INFO] [stdout] 494 |     let mut near_surf: Option<&Box<Surface>> = None;
[INFO] [stdout]     |                                    ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `f32::<impl f32>::powf` that must be used
[INFO] [stdout]    --> src/main.rs:657:9
[INFO] [stdout]     |
[INFO] [stdout] 657 |         max.powf(1.2);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: method returns a new number and does not mutate the original value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `f32::<impl f32>::powf` that must be used
[INFO] [stdout]    --> src/main.rs:818:9
[INFO] [stdout]     |
[INFO] [stdout] 818 |         max.powf(1.2);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: method returns a new number and does not mutate the original value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.26s
[INFO] running `Command { std: "docker" "inspect" "dd2adb32945fd0ae299fb5288dbaf8d8dca57a468df4a1f772dec74d48107c55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd2adb32945fd0ae299fb5288dbaf8d8dca57a468df4a1f772dec74d48107c55", kill_on_drop: false }`
[INFO] [stdout] dd2adb32945fd0ae299fb5288dbaf8d8dca57a468df4a1f772dec74d48107c55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c2f8b33d606fe1fcbba9a8335800c3a57f85027094c58e5e94acd0fc80e5d68
[INFO] running `Command { std: "docker" "start" "-a" "2c2f8b33d606fe1fcbba9a8335800c3a57f85027094c58e5e94acd0fc80e5d68", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_ray v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:178:33
[INFO] [stdout]     |
[INFO] [stdout] 178 |     static ref SURFACES:Vec<Box<Surface>> = vec!(
[INFO] [stdout]     |                                 ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:178:33
[INFO] [stdout]     |
[INFO] [stdout] 178 |     static ref SURFACES:Vec<Box<Surface>> = vec!(
[INFO] [stdout]     |                                 ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:421:44
[INFO] [stdout]     |
[INFO] [stdout] 421 |             let mut near_surf: Option<&Box<Surface>> = None;
[INFO] [stdout]     |                                            ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:494:36
[INFO] [stdout]     |
[INFO] [stdout] 494 |     let mut near_surf: Option<&Box<Surface>> = None;
[INFO] [stdout]     |                                    ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `f32::<impl f32>::powf` that must be used
[INFO] [stdout]    --> src/main.rs:657:9
[INFO] [stdout]     |
[INFO] [stdout] 657 |         max.powf(1.2);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: method returns a new number and does not mutate the original value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `f32::<impl f32>::powf` that must be used
[INFO] [stdout]    --> src/main.rs:818:9
[INFO] [stdout]     |
[INFO] [stdout] 818 |         max.powf(1.2);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: method returns a new number and does not mutate the original value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "2c2f8b33d606fe1fcbba9a8335800c3a57f85027094c58e5e94acd0fc80e5d68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c2f8b33d606fe1fcbba9a8335800c3a57f85027094c58e5e94acd0fc80e5d68", kill_on_drop: false }`
[INFO] [stdout] 2c2f8b33d606fe1fcbba9a8335800c3a57f85027094c58e5e94acd0fc80e5d68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c10ca7dd9cca6892f970ff9ca2eaad4b433a9fb01a97dee13eda17bbd15cf8ce
[INFO] running `Command { std: "docker" "start" "-a" "c10ca7dd9cca6892f970ff9ca2eaad4b433a9fb01a97dee13eda17bbd15cf8ce", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:178:33
[INFO] [stderr]     |
[INFO] [stderr] 178 |     static ref SURFACES:Vec<Box<Surface>> = vec!(
[INFO] [stderr]     |                                 ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:178:33
[INFO] [stderr]     |
[INFO] [stderr] 178 |     static ref SURFACES:Vec<Box<Surface>> = vec!(
[INFO] [stderr]     |                                 ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:421:44
[INFO] [stderr]     |
[INFO] [stderr] 421 |             let mut near_surf: Option<&Box<Surface>> = None;
[INFO] [stderr]     |                                            ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:494:36
[INFO] [stderr]     |
[INFO] [stderr] 494 |     let mut near_surf: Option<&Box<Surface>> = None;
[INFO] [stderr]     |                                    ^^^^^^^ help: use `dyn`: `dyn Surface`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `f32::<impl f32>::powf` that must be used
[INFO] [stderr]    --> src/main.rs:657:9
[INFO] [stderr]     |
[INFO] [stderr] 657 |         max.powf(1.2);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: method returns a new number and does not mutate the original value
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `f32::<impl f32>::powf` that must be used
[INFO] [stderr]    --> src/main.rs:818:9
[INFO] [stderr]     |
[INFO] [stderr] 818 |         max.powf(1.2);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: method returns a new number and does not mutate the original value
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_ray-38cf898805fb9e5f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c10ca7dd9cca6892f970ff9ca2eaad4b433a9fb01a97dee13eda17bbd15cf8ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c10ca7dd9cca6892f970ff9ca2eaad4b433a9fb01a97dee13eda17bbd15cf8ce", kill_on_drop: false }`
[INFO] [stdout] c10ca7dd9cca6892f970ff9ca2eaad4b433a9fb01a97dee13eda17bbd15cf8ce
