[INFO] fetching crate mpi 0.7.0...
[INFO] checking mpi-0.7.0 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate mpi 0.7.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate mpi 0.7.0 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mpi 0.7.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mpi 0.7.0
[INFO] tweaked toml for crates.io crate mpi 0.7.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate mpi 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libffi v3.2.0
[INFO] [stderr]   Downloaded build-probe-mpi v0.1.3
[INFO] [stderr]   Downloaded mpi-derive v0.1.1
[INFO] [stderr]   Downloaded mpi-sys v0.2.1
[INFO] [stderr]   Downloaded libffi-sys v2.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b80c413e436ca0e976ea2d2d83067292bb61fafb4d6778d9c6e127db291a914
[INFO] running `Command { std: "docker" "start" "-a" "1b80c413e436ca0e976ea2d2d83067292bb61fafb4d6778d9c6e127db291a914", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b80c413e436ca0e976ea2d2d83067292bb61fafb4d6778d9c6e127db291a914", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b80c413e436ca0e976ea2d2d83067292bb61fafb4d6778d9c6e127db291a914", kill_on_drop: false }`
[INFO] [stdout] 1b80c413e436ca0e976ea2d2d83067292bb61fafb4d6778d9c6e127db291a914
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4331e79352224511062b42eaf3ca4bcceae8a5fbe2fca2caf6f4bac4b99a25bf
[INFO] running `Command { std: "docker" "start" "-a" "4331e79352224511062b42eaf3ca4bcceae8a5fbe2fca2caf6f4bac4b99a25bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling proc-macro2 v1.0.68
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling prettyplease v0.2.15
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling shell-words v1.1.0
[INFO] [stderr]    Compiling bindgen v0.68.1
[INFO] [stderr]    Compiling regex-syntax v0.7.1
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling clang-sys v1.6.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling thiserror v1.0.49
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]    Compiling build-probe-mpi v0.1.3
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]    Compiling mpi v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling which v4.4.0
[INFO] [stderr]    Compiling libffi-sys v2.3.0
[INFO] [stderr]    Compiling regex v1.8.1
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.49
[INFO] [stderr]    Compiling mpi-sys v0.2.1
[INFO] [stderr]     Checking libffi v3.2.0
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]     --> src/collective.rs:1584:36
[INFO] [stdout]      |
[INFO] [stdout] 1584 |             .chain(std::iter::once(std::ptr::null_mut()))
[INFO] [stdout]      |                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]     --> src/lib.rs:7:9
[INFO] [stdout]      |
[INFO] [stdout] 7    | #![warn(unused_qualifications)]
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]      |
[INFO] [stdout] 1584 -             .chain(std::iter::once(std::ptr::null_mut()))
[INFO] [stdout] 1584 +             .chain(std::iter::once(ptr::null_mut()))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]     --> src/collective.rs:1643:44
[INFO] [stdout]      |
[INFO] [stdout] 1643 |                     .chain(std::iter::once(std::ptr::null_mut()))
[INFO] [stdout]      |                                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]      |
[INFO] [stdout] 1643 -                     .chain(std::iter::once(std::ptr::null_mut()))
[INFO] [stdout] 1643 +                     .chain(std::iter::once(ptr::null_mut()))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]     --> src/collective.rs:1584:36
[INFO] [stdout]      |
[INFO] [stdout] 1584 |             .chain(std::iter::once(std::ptr::null_mut()))
[INFO] [stdout]      |                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]     --> src/lib.rs:7:9
[INFO] [stdout]      |
[INFO] [stdout] 7    | #![warn(unused_qualifications)]
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]      |
[INFO] [stdout] 1584 -             .chain(std::iter::once(std::ptr::null_mut()))
[INFO] [stdout] 1584 +             .chain(std::iter::once(ptr::null_mut()))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]     --> src/collective.rs:1643:44
[INFO] [stdout]      |
[INFO] [stdout] 1643 |                     .chain(std::iter::once(std::ptr::null_mut()))
[INFO] [stdout]      |                                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]      |
[INFO] [stdout] 1643 -                     .chain(std::iter::once(std::ptr::null_mut()))
[INFO] [stdout] 1643 +                     .chain(std::iter::once(ptr::null_mut()))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]  --> examples/structured.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct MyInts([i32; 3]);
[INFO] [stdout]   |        ------ ^^^^^^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> examples/structured.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![deny(warnings)]
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct MyInts(());
[INFO] [stdout]   |               ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mpi` (example "structured") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4331e79352224511062b42eaf3ca4bcceae8a5fbe2fca2caf6f4bac4b99a25bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4331e79352224511062b42eaf3ca4bcceae8a5fbe2fca2caf6f4bac4b99a25bf", kill_on_drop: false }`
[INFO] [stdout] 4331e79352224511062b42eaf3ca4bcceae8a5fbe2fca2caf6f4bac4b99a25bf
