[INFO] cloning repository https://github.com/florianfelix/ivygen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/florianfelix/ivygen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflorianfelix%2Fivygen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflorianfelix%2Fivygen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ae556e3ce1b5f481ec46908122f1528a6017f8b
[INFO] checking florianfelix/ivygen against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflorianfelix%2Fivygen" "/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/florianfelix/ivygen on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/florianfelix/ivygen
[INFO] finished tweaking git repo https://github.com/florianfelix/ivygen
[INFO] tweaked toml for git repo https://github.com/florianfelix/ivygen written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/florianfelix/ivygen already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1149a3b71618f89112d8d0ee959e7ef56167746896563f1e4c977d71a3e21214
[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" "1149a3b71618f89112d8d0ee959e7ef56167746896563f1e4c977d71a3e21214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1149a3b71618f89112d8d0ee959e7ef56167746896563f1e4c977d71a3e21214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1149a3b71618f89112d8d0ee959e7ef56167746896563f1e4c977d71a3e21214", kill_on_drop: false }`
[INFO] [stdout] 1149a3b71618f89112d8d0ee959e7ef56167746896563f1e4c977d71a3e21214
[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" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e72963ee6e91039e8819edb74182f31d3ef74d254f139f29079cb3b39a1f63ca
[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" "e72963ee6e91039e8819edb74182f31d3ef74d254f139f29079cb3b39a1f63ca", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]     Checking downcast-rs v1.1.1
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking instant v0.1.2
[INFO] [stderr]     Checking oorandom v11.1.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking x11-dl v2.18.5
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]     Checking petgraph v0.5.0
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling gl v0.14.0
[INFO] [stderr]    Compiling glutin v0.19.0
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking num-integer v0.1.42
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking rusttype v0.8.2
[INFO] [stderr]     Checking num-iter v0.1.40
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]    Compiling paste-impl v0.1.12
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking image v0.22.5
[INFO] [stderr]     Checking paste v0.1.12
[INFO] [stderr]     Checking simba v0.1.2
[INFO] [stderr]     Checking nalgebra v0.21.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking winit v0.18.1
[INFO] [stderr]     Checking ncollide3d v0.23.0
[INFO] [stderr]     Checking kiss3d v0.24.1
[INFO] [stderr]     Checking ivygen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ivystructs.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn grow_vines(mut self, from_level: usize) {
[INFO] [stdout]    |                       ----^^^^
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ivystructs.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let mut finished = 0;
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ivystructs.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut vine = Vine::new(depth, origin).seed().grow(node_count);
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ivystructs.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn grow_vines(mut self, from_level: usize) {
[INFO] [stdout]    |                       ----^^^^
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ivystructs.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let mut finished = 0;
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ivystructs.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut vine = Vine::new(depth, origin).seed().grow(node_count);
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 06s
[INFO] running `Command { std: "docker" "inspect" "e72963ee6e91039e8819edb74182f31d3ef74d254f139f29079cb3b39a1f63ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e72963ee6e91039e8819edb74182f31d3ef74d254f139f29079cb3b39a1f63ca", kill_on_drop: false }`
[INFO] [stdout] e72963ee6e91039e8819edb74182f31d3ef74d254f139f29079cb3b39a1f63ca