[INFO] fetching crate cuba 0.2.4...
[INFO] checking cuba-0.2.4 against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] extracting crate cuba 0.2.4 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate cuba 0.2.4 on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cuba 0.2.4
[INFO] finished tweaking crates.io crate cuba 0.2.4
[INFO] tweaked toml for crates.io crate cuba 0.2.4 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate cuba 0.2.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f726de14cc9ab374aa08b6c9faf86d525785f4e66a4fa7f36ef3620bcb3cb757
[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" "f726de14cc9ab374aa08b6c9faf86d525785f4e66a4fa7f36ef3620bcb3cb757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f726de14cc9ab374aa08b6c9faf86d525785f4e66a4fa7f36ef3620bcb3cb757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f726de14cc9ab374aa08b6c9faf86d525785f4e66a4fa7f36ef3620bcb3cb757", kill_on_drop: false }`
[INFO] [stdout] f726de14cc9ab374aa08b6c9faf86d525785f4e66a4fa7f36ef3620bcb3cb757
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a546d1097f53a9efcd929e1766fd386649a931eb7eb19a60cb8af362a6f7815b
[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" "a546d1097f53a9efcd929e1766fd386649a931eb7eb19a60cb8af362a6f7815b", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking cuba v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ndim`
[INFO] [stdout]    --> src/lib.rs:594:9
[INFO] [stdout]     |
[INFO] [stdout] 594 |         ndim: *const c_int,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_ndim`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:595:9
[INFO] [stdout]     |
[INFO] [stdout] 595 |         b: *const c_double,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/lib.rs:596:9
[INFO] [stdout]     |
[INFO] [stdout] 596 |         n: *mut c_int,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:597:9
[INFO] [stdout]     |
[INFO] [stdout] 597 |         x: *mut c_double,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `userdata`
[INFO] [stdout]    --> src/lib.rs:598:9
[INFO] [stdout]     |
[INFO] [stdout] 598 |         userdata: *mut c_void,
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_userdata`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cores`
[INFO] [stdout]    --> src/lib.rs:385:5
[INFO] [stdout]     |
[INFO] [stdout] 385 |     cores: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `c_peakfinder`
[INFO] [stdout]    --> src/lib.rs:593:19
[INFO] [stdout]     |
[INFO] [stdout] 593 |     extern "C" fn c_peakfinder(
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ndim`
[INFO] [stdout]    --> src/lib.rs:594:9
[INFO] [stdout]     |
[INFO] [stdout] 594 |         ndim: *const c_int,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_ndim`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:595:9
[INFO] [stdout]     |
[INFO] [stdout] 595 |         b: *const c_double,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/lib.rs:596:9
[INFO] [stdout]     |
[INFO] [stdout] 596 |         n: *mut c_int,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:597:9
[INFO] [stdout]     |
[INFO] [stdout] 597 |         x: *mut c_double,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `userdata`
[INFO] [stdout]    --> src/lib.rs:598:9
[INFO] [stdout]     |
[INFO] [stdout] 598 |         userdata: *mut c_void,
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_userdata`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cores`
[INFO] [stdout]    --> src/lib.rs:385:5
[INFO] [stdout]     |
[INFO] [stdout] 385 |     cores: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `c_peakfinder`
[INFO] [stdout]    --> src/lib.rs:593:19
[INFO] [stdout]     |
[INFO] [stdout] 593 |     extern "C" fn c_peakfinder(
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "a546d1097f53a9efcd929e1766fd386649a931eb7eb19a60cb8af362a6f7815b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a546d1097f53a9efcd929e1766fd386649a931eb7eb19a60cb8af362a6f7815b", kill_on_drop: false }`
[INFO] [stdout] a546d1097f53a9efcd929e1766fd386649a931eb7eb19a60cb8af362a6f7815b