[INFO] cloning repository https://github.com/maxastyler/Spirograph
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maxastyler/Spirograph" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxastyler%2FSpirograph", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxastyler%2FSpirograph'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d639d179214179e4843bca5cbd646dc9a1959e5d
[INFO] checking maxastyler/Spirograph against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxastyler%2FSpirograph" "/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/maxastyler/Spirograph 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/maxastyler/Spirograph
[INFO] finished tweaking git repo https://github.com/maxastyler/Spirograph
[INFO] tweaked toml for git repo https://github.com/maxastyler/Spirograph written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/maxastyler/Spirograph 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] [stdout] 2ee6d02650174730e019f2b88abdb353316693f43f317f2c84503a8e4bcc0368
[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" "2ee6d02650174730e019f2b88abdb353316693f43f317f2c84503a8e4bcc0368", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ee6d02650174730e019f2b88abdb353316693f43f317f2c84503a8e4bcc0368", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ee6d02650174730e019f2b88abdb353316693f43f317f2c84503a8e4bcc0368", kill_on_drop: false }`
[INFO] [stdout] 2ee6d02650174730e019f2b88abdb353316693f43f317f2c84503a8e4bcc0368
[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] 6032af17d074a1e49f16918ce6d5d6086ec4bed6f4d453dc53f80a8378dfddcf
[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" "6032af17d074a1e49f16918ce6d5d6086ec4bed6f4d453dc53f80a8378dfddcf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking num-traits v0.1.42
[INFO] [stderr]     Checking libc v0.2.36
[INFO] [stderr]     Checking either v1.4.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking adler32 v1.0.2
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking scoped_threadpool v0.1.8
[INFO] [stderr]     Checking inflate v0.3.3
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking deflate v0.7.17
[INFO] [stderr]     Checking rand v0.3.20
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num-rational v0.1.40
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking spirograph v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn normal(f: &Fn(f64) -> (f64, f64), dx: f64, t: 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:34:32
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn gen_envelope(h: f64) -> Box<Fn(f64) -> f64> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:40:35
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn double_envelope(h: f64) -> Box<Fn(f64) -> f64> {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:46:32
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn envelope_path<'a>(path: &'a Fn(f64) -> (f64, f64), envelope: Box<Fn(f64) -> f64 + 'a>) -> Box<Fn(f64) -> (f64, f64) + 'a> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> (f64, f64)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:46:69
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn envelope_path<'a>(path: &'a Fn(f64) -> (f64, f64), envelope: Box<Fn(f64) -> f64 + 'a>) -> Box<Fn(f64) -> (f64, f64) + 'a> {
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64 + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:46:98
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn envelope_path<'a>(path: &'a Fn(f64) -> (f64, f64), envelope: Box<Fn(f64) -> f64 + 'a>) -> Box<Fn(f64) -> (f64, f64) + 'a> {
[INFO] [stdout]    |                                                                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> (f64, f64) + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:64:91
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...>, path_points: Vec<f64>, path: & Fn(f64) -> (f64, f64), envelope_generator: &Fn(f64) -> Box<Fn(f64) -> f64>) -> image::ImageBuffer<im...
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> (f64, f64)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:64:135
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...4), envelope_generator: &Fn(f64) -> Box<Fn(f64) -> f64>) -> image::ImageBuffer<image::Luma<u8>, std::vec::Vec<u8>> {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> Box<Fn(f64) -> f64>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:64:150
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...64), envelope_generator: &Fn(f64) -> Box<Fn(f64) -> f64>) -> image::ImageBuffer<image::Luma<u8>, std::vec::Vec<u8>> {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn normal(f: &Fn(f64) -> (f64, f64), dx: f64, t: 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:34:32
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn gen_envelope(h: f64) -> Box<Fn(f64) -> f64> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:40:35
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn double_envelope(h: f64) -> Box<Fn(f64) -> f64> {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:46:32
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn envelope_path<'a>(path: &'a Fn(f64) -> (f64, f64), envelope: Box<Fn(f64) -> f64 + 'a>) -> Box<Fn(f64) -> (f64, f64) + 'a> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> (f64, f64)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:46:69
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn envelope_path<'a>(path: &'a Fn(f64) -> (f64, f64), envelope: Box<Fn(f64) -> f64 + 'a>) -> Box<Fn(f64) -> (f64, f64) + 'a> {
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64 + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:46:98
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn envelope_path<'a>(path: &'a Fn(f64) -> (f64, f64), envelope: Box<Fn(f64) -> f64 + 'a>) -> Box<Fn(f64) -> (f64, f64) + 'a> {
[INFO] [stdout]    |                                                                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> (f64, f64) + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:64:91
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...>, path_points: Vec<f64>, path: & Fn(f64) -> (f64, f64), envelope_generator: &Fn(f64) -> Box<Fn(f64) -> f64>) -> image::ImageBuffer<im...
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> (f64, f64)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:64:135
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...4), envelope_generator: &Fn(f64) -> Box<Fn(f64) -> f64>) -> image::ImageBuffer<image::Luma<u8>, std::vec::Vec<u8>> {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> Box<Fn(f64) -> f64>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:64:150
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...64), envelope_generator: &Fn(f64) -> Box<Fn(f64) -> f64>) -> image::ImageBuffer<image::Luma<u8>, std::vec::Vec<u8>> {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `path`
[INFO] [stdout]  --> src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn path(t: f64) -> (f64, f64) {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `envelope`
[INFO] [stdout]   --> src/main.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn envelope(t: f64) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `double_envelope`
[INFO] [stdout]   --> src/main.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn double_envelope(h: f64) -> Box<Fn(f64) -> f64> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `path`
[INFO] [stdout]  --> src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn path(t: f64) -> (f64, f64) {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `envelope`
[INFO] [stdout]   --> src/main.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn envelope(t: f64) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `double_envelope`
[INFO] [stdout]   --> src/main.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn double_envelope(h: f64) -> Box<Fn(f64) -> f64> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.23s
[INFO] running `Command { std: "docker" "inspect" "6032af17d074a1e49f16918ce6d5d6086ec4bed6f4d453dc53f80a8378dfddcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6032af17d074a1e49f16918ce6d5d6086ec4bed6f4d453dc53f80a8378dfddcf", kill_on_drop: false }`
[INFO] [stdout] 6032af17d074a1e49f16918ce6d5d6086ec4bed6f4d453dc53f80a8378dfddcf