[INFO] fetching crate cuba 0.2.2...
[INFO] checking cuba-0.2.2 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate cuba 0.2.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate cuba 0.2.2 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cuba 0.2.2
[INFO] finished tweaking crates.io crate cuba 0.2.2
[INFO] tweaked toml for crates.io crate cuba 0.2.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate cuba 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6516eb724aad7daa200a963437f8ad23350201c05208f7e2c81a016c5f3114d1
[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" "6516eb724aad7daa200a963437f8ad23350201c05208f7e2c81a016c5f3114d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6516eb724aad7daa200a963437f8ad23350201c05208f7e2c81a016c5f3114d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6516eb724aad7daa200a963437f8ad23350201c05208f7e2c81a016c5f3114d1", kill_on_drop: false }`
[INFO] [stdout] 6516eb724aad7daa200a963437f8ad23350201c05208f7e2c81a016c5f3114d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ecdd1394762b349e72e12d1d5160d5871e557569d302d69d78dbe2fe80158d7
[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" "2ecdd1394762b349e72e12d1d5160d5871e557569d302d69d78dbe2fe80158d7", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking cuba v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ndim`
[INFO] [stdout]    --> src/lib.rs:571:9
[INFO] [stdout]     |
[INFO] [stdout] 571 |         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:572:9
[INFO] [stdout]     |
[INFO] [stdout] 572 |         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:573:9
[INFO] [stdout]     |
[INFO] [stdout] 573 |         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:574:9
[INFO] [stdout]     |
[INFO] [stdout] 574 |         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:575:9
[INFO] [stdout]     |
[INFO] [stdout] 575 |         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:571:9
[INFO] [stdout]     |
[INFO] [stdout] 571 |         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:572:9
[INFO] [stdout]     |
[INFO] [stdout] 572 |         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:573:9
[INFO] [stdout]     |
[INFO] [stdout] 573 |         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:574:9
[INFO] [stdout]     |
[INFO] [stdout] 574 |         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:575:9
[INFO] [stdout]     |
[INFO] [stdout] 575 |         userdata: *mut c_void,
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_userdata`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `c_peakfinder`
[INFO] [stdout]    --> src/lib.rs:570:19
[INFO] [stdout]     |
[INFO] [stdout] 570 |     extern "C" fn c_peakfinder(
[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:570:19
[INFO] [stdout]     |
[INFO] [stdout] 570 |     extern "C" fn c_peakfinder(
[INFO] [stdout]     |                   ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `Command { std: "docker" "inspect" "2ecdd1394762b349e72e12d1d5160d5871e557569d302d69d78dbe2fe80158d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ecdd1394762b349e72e12d1d5160d5871e557569d302d69d78dbe2fe80158d7", kill_on_drop: false }`
[INFO] [stdout] 2ecdd1394762b349e72e12d1d5160d5871e557569d302d69d78dbe2fe80158d7