[INFO] cloning repository https://github.com/depressed-pho/acid-rain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/depressed-pho/acid-rain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdepressed-pho%2Facid-rain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdepressed-pho%2Facid-rain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee29eeb046dff05360cd8be0db5d724f43ba9d22
[INFO] checking depressed-pho/acid-rain against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdepressed-pho%2Facid-rain" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/depressed-pho/acid-rain on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/depressed-pho/acid-rain
[INFO] finished tweaking git repo https://github.com/depressed-pho/acid-rain
[INFO] tweaked toml for git repo https://github.com/depressed-pho/acid-rain written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/depressed-pho/acid-rain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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] 8ab131f90c8cb7ec3d317cafa09e83eb5ccb179435e7203bd9fbb7fd59672f25
[INFO] running `Command { std: "docker" "start" "-a" "8ab131f90c8cb7ec3d317cafa09e83eb5ccb179435e7203bd9fbb7fd59672f25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ab131f90c8cb7ec3d317cafa09e83eb5ccb179435e7203bd9fbb7fd59672f25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab131f90c8cb7ec3d317cafa09e83eb5ccb179435e7203bd9fbb7fd59672f25", kill_on_drop: false }`
[INFO] [stdout] 8ab131f90c8cb7ec3d317cafa09e83eb5ccb179435e7203bd9fbb7fd59672f25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80ca46d43afe04725019616299535084be353c9a93f0648731f1d36ad733b676
[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" "80ca46d43afe04725019616299535084be353c9a93f0648731f1d36ad733b676", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking weak-table v0.2.3
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling fixed-map-derive v0.7.0
[INFO] [stderr]    Compiling const-random-macro v0.1.6
[INFO] [stderr]     Checking const-random v0.1.6
[INFO] [stderr]     Checking ahash v0.2.18
[INFO] [stderr]     Checking fixed-map v0.7.1
[INFO] [stderr]     Checking ctk v0.1.0 (/opt/rustwide/workdir/ctk)
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]   --> ctk/src/layout/group_layout.rs:45:29
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn do_layout(&mut self, parent: &dyn Component) {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]   --> ctk/src/layout/group_layout.rs:72:37
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn get_size_requirements(&self, parent: &dyn Component) -> SizeRequirements {
[INFO] [stdout]    |                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seen`
[INFO] [stdout]    --> ctk/src/layout/spring_layout/spring/implementation.rs:202:25
[INFO] [stdout]     |
[INFO] [stdout] 202 |     fn is_cyclic(&self, seen: &mut SpringSet) -> bool {
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_seen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]   --> ctk/src/layout/group_layout.rs:45:29
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn do_layout(&mut self, parent: &dyn Component) {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]   --> ctk/src/layout/group_layout.rs:72:37
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn get_size_requirements(&self, parent: &dyn Component) -> SizeRequirements {
[INFO] [stdout]    |                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seen`
[INFO] [stdout]    --> ctk/src/layout/spring_layout/spring/implementation.rs:202:25
[INFO] [stdout]     |
[INFO] [stdout] 202 |     fn is_cyclic(&self, seen: &mut SpringSet) -> bool {
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_seen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking acid-rain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arg`
[INFO] [stdout]  --> src/main.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | use clap::{Arg, ArgMatches};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arg`
[INFO] [stdout]  --> src/main.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | use clap::{Arg, ArgMatches};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matches`
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let matches = opt_matches();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matches`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `matches`
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let matches = opt_matches();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matches`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.10s
[INFO] running `Command { std: "docker" "inspect" "80ca46d43afe04725019616299535084be353c9a93f0648731f1d36ad733b676", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80ca46d43afe04725019616299535084be353c9a93f0648731f1d36ad733b676", kill_on_drop: false }`
[INFO] [stdout] 80ca46d43afe04725019616299535084be353c9a93f0648731f1d36ad733b676