[INFO] cloning repository https://github.com/maxastyler/brusselator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maxastyler/brusselator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxastyler%2Fbrusselator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxastyler%2Fbrusselator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f30181b702fcf847d4c70508ff082f37bab976c
[INFO] checking maxastyler/brusselator against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxastyler%2Fbrusselator" "/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/brusselator 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/maxastyler/brusselator
[INFO] finished tweaking git repo https://github.com/maxastyler/brusselator
[INFO] tweaked toml for git repo https://github.com/maxastyler/brusselator written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/maxastyler/brusselator 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] [stderr]     Blocking waiting for file lock on package cache
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 2029a01839bc0d1a4d1b36399594643a3691df4ed57632200a8a6a10b5af519c
[INFO] running `Command { std: "docker" "start" "-a" "2029a01839bc0d1a4d1b36399594643a3691df4ed57632200a8a6a10b5af519c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2029a01839bc0d1a4d1b36399594643a3691df4ed57632200a8a6a10b5af519c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2029a01839bc0d1a4d1b36399594643a3691df4ed57632200a8a6a10b5af519c", kill_on_drop: false }`
[INFO] [stdout] 2029a01839bc0d1a4d1b36399594643a3691df4ed57632200a8a6a10b5af519c
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb0934c6d42274f6e5e93a32883e8087bf572812118a56f98478c1bf4b3f55cc
[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" "cb0934c6d42274f6e5e93a32883e8087bf572812118a56f98478c1bf4b3f55cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking iter-read v0.1.0
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[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 rustc_version v0.2.3
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clicolors-control v1.0.0
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking console v0.7.5
[INFO] [stderr]     Checking indicatif v0.11.0
[INFO] [stderr]     Checking serde-pickle v0.4.1
[INFO] [stderr]     Checking brusselator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `SubCommand`
[INFO] [stdout]   --> src/main.rs:18:22
[INFO] [stdout]    |
[INFO] [stdout] 18 | use clap::{App, Arg, SubCommand};
[INFO] [stdout]    |                      ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SubCommand`
[INFO] [stdout]   --> src/main.rs:18:22
[INFO] [stdout]    |
[INFO] [stdout] 18 | use clap::{App, Arg, SubCommand};
[INFO] [stdout]    |                      ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `positions` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let (x, y) = positions.last().unwrap();
[INFO] [stdout]    |                      --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 51 |         positions.push((
[INFO] [stdout]    |         ^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 52 |             x + (1.0 - (b + 1.0) * x + a * x.powi(2) * y) * dt + (g[0] * w0 + g[1] * w1) * sq_dt,
[INFO] [stdout]    |             - immutable borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `positions` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/main.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let (x, y) = positions.last().unwrap();
[INFO] [stdout]    |                      --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 76 |         positions.push((
[INFO] [stdout]    |         ^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 77 |             x + (1.0 - (b + 1.0) * x + a * x.powi(2) * y) * dt + (g[0] * w0 + g[1] * w1) * sq_dt,
[INFO] [stdout]    |             - immutable borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `positions` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let (x, y) = positions.last().unwrap();
[INFO] [stdout]    |                      --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 51 |         positions.push((
[INFO] [stdout]    |         ^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 52 |             x + (1.0 - (b + 1.0) * x + a * x.powi(2) * y) * dt + (g[0] * w0 + g[1] * w1) * sq_dt,
[INFO] [stdout]    |             - immutable borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `positions` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/main.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let (x, y) = positions.last().unwrap();
[INFO] [stdout]    |                      --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 76 |         positions.push((
[INFO] [stdout]    |         ^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 77 |             x + (1.0 - (b + 1.0) * x + a * x.powi(2) * y) * dt + (g[0] * w0 + g[1] * w1) * sq_dt,
[INFO] [stdout]    |             - immutable borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[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 22.21s
[INFO] running `Command { std: "docker" "inspect" "cb0934c6d42274f6e5e93a32883e8087bf572812118a56f98478c1bf4b3f55cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb0934c6d42274f6e5e93a32883e8087bf572812118a56f98478c1bf4b3f55cc", kill_on_drop: false }`
[INFO] [stdout] cb0934c6d42274f6e5e93a32883e8087bf572812118a56f98478c1bf4b3f55cc