[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 try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxastyler%2Fbrusselator" "/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/maxastyler/brusselator on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-4/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" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded iter-read v0.1.0
[INFO] [stderr]   Downloaded serde-pickle v0.4.1
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b35741269d53223b624e8579d2fb06025608bf8648572017e0058b66299dab8
[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" "0b35741269d53223b624e8579d2fb06025608bf8648572017e0058b66299dab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b35741269d53223b624e8579d2fb06025608bf8648572017e0058b66299dab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b35741269d53223b624e8579d2fb06025608bf8648572017e0058b66299dab8", kill_on_drop: false }`
[INFO] [stdout] 0b35741269d53223b624e8579d2fb06025608bf8648572017e0058b66299dab8
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 419d0d09d76052aaa2402ff82d9bf9d183a363d4253949a45690eb692d7886d7
[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" "419d0d09d76052aaa2402ff82d9bf9d183a363d4253949a45690eb692d7886d7", 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]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking iter-read v0.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking clicolors-control v1.0.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking regex v1.1.2
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.51s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "419d0d09d76052aaa2402ff82d9bf9d183a363d4253949a45690eb692d7886d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "419d0d09d76052aaa2402ff82d9bf9d183a363d4253949a45690eb692d7886d7", kill_on_drop: false }`
[INFO] [stdout] 419d0d09d76052aaa2402ff82d9bf9d183a363d4253949a45690eb692d7886d7