[INFO] updating cached repository https://github.com/mystal/simple-terrain
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7444fe073b69113549d9b3085e59fac233edbd3
[INFO] checking mystal/simple-terrain against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmystal%2Fsimple-terrain" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mystal/simple-terrain on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mystal/simple-terrain
[INFO] finished tweaking git repo https://github.com/mystal/simple-terrain
[INFO] tweaked toml for git repo https://github.com/mystal/simple-terrain written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mystal/simple-terrain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-4/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[INFO] the lockfile is outdated, regenerating it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" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "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] c4ecd79c5150d7b9801525366b483817188bd94e3f116f074b277b3a88aee706
[INFO] running `Command { std: "docker" "start" "-a" "c4ecd79c5150d7b9801525366b483817188bd94e3f116f074b277b3a88aee706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4ecd79c5150d7b9801525366b483817188bd94e3f116f074b277b3a88aee706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4ecd79c5150d7b9801525366b483817188bd94e3f116f074b277b3a88aee706", kill_on_drop: false }`
[INFO] [stdout] c4ecd79c5150d7b9801525366b483817188bd94e3f116f074b277b3a88aee706
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cdb661b5a06782d835e2a920a3070215f43da24220ddafb84438ee706df88679
[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" "cdb661b5a06782d835e2a920a3070215f43da24220ddafb84438ee706df88679", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking deflate v0.8.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking tiff v0.5.0
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking rayon-core v1.7.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking png v0.16.5
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking num-iter v0.1.41
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.19
[INFO] [stderr]     Checking image v0.23.5
[INFO] [stderr]     Checking simple-terrain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 | type NoiseField = Box<Fn(f64, f64) -> f64>;
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 | type ColorMap = Fn(f64) -> i32;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:29:27
[INFO] [stdout]    |
[INFO] [stdout] 29 |     (0..n).fold(Box::new(|x, y| 0.0), |noise, i| {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:29:30
[INFO] [stdout]    |
[INFO] [stdout] 29 |     (0..n).fold(Box::new(|x, y| 0.0), |noise, i| {
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `ColorMap`
[INFO] [stdout]   --> src/main.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | type ColorMap = Fn(f64) -> i32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `grayscale`
[INFO] [stdout]   --> src/main.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn grayscale(v: f64) -> image::Luma<u8> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:10:23
[INFO] [stdout]    |
[INFO] [stdout] 10 | type NoiseField = Box<Fn(f64, f64) -> f64>;
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 | type ColorMap = Fn(f64) -> i32;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:29:27
[INFO] [stdout]    |
[INFO] [stdout] 29 |     (0..n).fold(Box::new(|x, y| 0.0), |noise, i| {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:29:30
[INFO] [stdout]    |
[INFO] [stdout] 29 |     (0..n).fold(Box::new(|x, y| 0.0), |noise, i| {
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `ColorMap`
[INFO] [stdout]   --> src/main.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | type ColorMap = Fn(f64) -> i32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `grayscale`
[INFO] [stdout]   --> src/main.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn grayscale(v: f64) -> image::Luma<u8> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.77s
[INFO] running `Command { std: "docker" "inspect" "cdb661b5a06782d835e2a920a3070215f43da24220ddafb84438ee706df88679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdb661b5a06782d835e2a920a3070215f43da24220ddafb84438ee706df88679", kill_on_drop: false }`
[INFO] [stdout] cdb661b5a06782d835e2a920a3070215f43da24220ddafb84438ee706df88679