[INFO] updating cached repository https://github.com/elfsternberg/buddhabrot
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 484f7a9508f710f17354d74b22f4114b9ba9e3b6
[INFO] checking elfsternberg/buddhabrot against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felfsternberg%2Fbuddhabrot" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elfsternberg/buddhabrot on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/elfsternberg/buddhabrot
[INFO] finished tweaking git repo https://github.com/elfsternberg/buddhabrot
[INFO] tweaked toml for git repo https://github.com/elfsternberg/buddhabrot written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/elfsternberg/buddhabrot already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "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" "/opt/rustwide/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ad55f88b1bb626691ad7dd228be603abd1629cca35710e03e5546fa3eb9b2998
[INFO] running `"docker" "start" "-a" "ad55f88b1bb626691ad7dd228be603abd1629cca35710e03e5546fa3eb9b2998"`
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling num-complex v0.2.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking getrandom v0.1.11
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking backtrace-sys v0.1.23
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking regex v1.3.0
[INFO] [stderr]     Checking csv v1.0.7
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking escargot v0.4.0
[INFO] [stderr]     Checking backtrace v0.3.8
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking crossbeam v0.7.2
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Checking image v0.22.1
[INFO] [stderr]     Checking buddhabrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/lispy.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/lispy.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / macro_rules! t {
[INFO] [stderr] 17 | |     ($condition: expr, $_true: expr, $_false: expr) => {
[INFO] [stderr] 18 | |         if $condition {
[INFO] [stderr] 19 | |             $_true
[INFO] [stderr] ...  |
[INFO] [stderr] 23 | |     };
[INFO] [stderr] 24 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]   --> src/lispy.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::collections::HashMap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/lispy.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / macro_rules! t {
[INFO] [stderr] 17 | |     ($condition: expr, $_true: expr, $_false: expr) => {
[INFO] [stderr] 18 | |         if $condition {
[INFO] [stderr] 19 | |             $_true
[INFO] [stderr] ...  |
[INFO] [stderr] 23 | |     };
[INFO] [stderr] 24 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `buddhabrot::lispy::find_interesting_points`
[INFO] [stderr]  --> src/bin/buddha.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use buddhabrot::lispy::find_interesting_points;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `buddhabrot::NaiveRenderer`
[INFO] [stderr]  --> src/bin/buddha.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use buddhabrot::NaiveRenderer;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `image::png::PNGEncoder`
[INFO] [stderr]   --> src/bin/buddha.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use image::png::PNGEncoder;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iterations`
[INFO] [stderr]    --> src/bin/buddha.rs:184:9
[INFO] [stderr]     |
[INFO] [stderr] 184 |     let iterations = usize::from_str(matches.value_of(ITERATIONS).unwrap())
[INFO] [stderr]     |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_iterations`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/buddha.rs:205:23
[INFO] [stderr]     |
[INFO] [stderr] 205 |                 .map(|mut s| {
[INFO] [stderr]     |                       ----^
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `buddhabrot::lispy::find_interesting_points`
[INFO] [stderr]  --> src/bin/buddha.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use buddhabrot::lispy::find_interesting_points;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `buddhabrot::NaiveRenderer`
[INFO] [stderr]  --> src/bin/buddha.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use buddhabrot::NaiveRenderer;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `image::png::PNGEncoder`
[INFO] [stderr]   --> src/bin/buddha.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use image::png::PNGEncoder;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iterations`
[INFO] [stderr]    --> src/bin/buddha.rs:184:9
[INFO] [stderr]     |
[INFO] [stderr] 184 |     let iterations = usize::from_str(matches.value_of(ITERATIONS).unwrap())
[INFO] [stderr]     |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_iterations`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/buddha.rs:205:23
[INFO] [stderr]     |
[INFO] [stderr] 205 |                 .map(|mut s| {
[INFO] [stderr]     |                       ----^
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.96s
[INFO] running `"docker" "inspect" "ad55f88b1bb626691ad7dd228be603abd1629cca35710e03e5546fa3eb9b2998"`
[INFO] running `"docker" "rm" "-f" "ad55f88b1bb626691ad7dd228be603abd1629cca35710e03e5546fa3eb9b2998"`
[INFO] [stdout] ad55f88b1bb626691ad7dd228be603abd1629cca35710e03e5546fa3eb9b2998