[INFO] fetching crate cuba 0.2.4...
[INFO] checking cuba-0.2.4 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate cuba 0.2.4 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate cuba 0.2.4 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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-9/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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] c6a1ecbca5467c1b0f267fbff4ccbee116d50a317cd4df9d51bdd86a135d6816
[INFO] running `Command { std: "docker" "start" "-a" "c6a1ecbca5467c1b0f267fbff4ccbee116d50a317cd4df9d51bdd86a135d6816", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6a1ecbca5467c1b0f267fbff4ccbee116d50a317cd4df9d51bdd86a135d6816", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6a1ecbca5467c1b0f267fbff4ccbee116d50a317cd4df9d51bdd86a135d6816", kill_on_drop: false }`
[INFO] [stdout] c6a1ecbca5467c1b0f267fbff4ccbee116d50a317cd4df9d51bdd86a135d6816
[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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 1ed9cb82c346ea77bf7eded81b3a47bb89000c614473b54dbdd392c1cb8c614d
[INFO] running `Command { std: "docker" "start" "-a" "1ed9cb82c346ea77bf7eded81b3a47bb89000c614473b54dbdd392c1cb8c614d", 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: 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: 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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `Command { std: "docker" "inspect" "1ed9cb82c346ea77bf7eded81b3a47bb89000c614473b54dbdd392c1cb8c614d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ed9cb82c346ea77bf7eded81b3a47bb89000c614473b54dbdd392c1cb8c614d", kill_on_drop: false }`
[INFO] [stdout] 1ed9cb82c346ea77bf7eded81b3a47bb89000c614473b54dbdd392c1cb8c614d