[INFO] fetching crate mpi 0.7.0...
[INFO] checking mpi-0.7.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[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 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded build-probe-mpi v0.1.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.68
[INFO] [stderr]   Downloaded libffi v3.2.0
[INFO] [stderr]   Downloaded mpi-sys v0.2.1
[INFO] [stderr]   Downloaded libffi-sys v2.3.0
[INFO] [stderr]   Downloaded mpi-derive v0.1.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed200fb68c837fd50171f49e99ae72ac97984475c8721d24e434142d7e9778f6
[INFO] running `Command { std: "docker" "start" "-a" "ed200fb68c837fd50171f49e99ae72ac97984475c8721d24e434142d7e9778f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed200fb68c837fd50171f49e99ae72ac97984475c8721d24e434142d7e9778f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed200fb68c837fd50171f49e99ae72ac97984475c8721d24e434142d7e9778f6", kill_on_drop: false }`
[INFO] [stdout] ed200fb68c837fd50171f49e99ae72ac97984475c8721d24e434142d7e9778f6
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea9ba0446cb614357287aa4be069eb515796dc2e3038c6a456a87de2a319fe53
[INFO] running `Command { std: "docker" "start" "-a" "ea9ba0446cb614357287aa4be069eb515796dc2e3038c6a456a87de2a319fe53", 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 pkg-config v0.3.27
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling shell-words v1.1.0
[INFO] [stderr]    Compiling bindgen v0.68.1
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling regex-syntax v0.7.1
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling clang-sys v1.6.1
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[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 smallvec v1.11.1
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]    Compiling build-probe-mpi v0.1.3
[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: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/request.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | use std::convert::TryInto;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[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: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/request.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | use std::convert::TryInto;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 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" "ea9ba0446cb614357287aa4be069eb515796dc2e3038c6a456a87de2a319fe53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea9ba0446cb614357287aa4be069eb515796dc2e3038c6a456a87de2a319fe53", kill_on_drop: false }`
[INFO] [stdout] ea9ba0446cb614357287aa4be069eb515796dc2e3038c6a456a87de2a319fe53
[INFO] checking mpi-0.7.0 against try#72eda894eb3548c7ba774079ce0afab42958d4ee for pr-121848-1
[INFO] extracting crate mpi 0.7.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate mpi 0.7.0 on toolchain 72eda894eb3548c7ba774079ce0afab42958d4ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "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-tc2/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" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f162667d6f2974aa7f52dfddc1430c6f88fcace95e2134f27ad67cb8bec81904
[INFO] running `Command { std: "docker" "start" "-a" "f162667d6f2974aa7f52dfddc1430c6f88fcace95e2134f27ad67cb8bec81904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f162667d6f2974aa7f52dfddc1430c6f88fcace95e2134f27ad67cb8bec81904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f162667d6f2974aa7f52dfddc1430c6f88fcace95e2134f27ad67cb8bec81904", kill_on_drop: false }`
[INFO] [stdout] f162667d6f2974aa7f52dfddc1430c6f88fcace95e2134f27ad67cb8bec81904
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bca6c45d9939cbd1b55f6eb38d3a4539d0aa777038098133e2a96f860f3096d
[INFO] running `Command { std: "docker" "start" "-a" "9bca6c45d9939cbd1b55f6eb38d3a4539d0aa777038098133e2a96f860f3096d", 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 pkg-config v0.3.27
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling shell-words v1.1.0
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling regex-syntax v0.7.1
[INFO] [stderr]    Compiling bindgen v0.68.1
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling clang-sys v1.6.1
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling bitflags v2.4.1
[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 smallvec v1.11.1
[INFO] [stderr]     Checking once_cell v1.18.0
[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 quote v1.0.33
[INFO] [stderr]    Compiling nom v7.1.3
[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: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/request.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | use std::convert::TryInto;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[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: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/request.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | use std::convert::TryInto;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/std/src/prelude/mod.rs:129:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mpi` is imported redundantly
[INFO] [stdout]  --> examples/immediate_multiple_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use mpi;
[INFO] [stdout]   |     ^^^ the item `mpi` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mpi` is imported redundantly
[INFO] [stdout]  --> examples/immediate_multiple_requests.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use mpi;
[INFO] [stdout]   |     ^^^ the item `mpi` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9bca6c45d9939cbd1b55f6eb38d3a4539d0aa777038098133e2a96f860f3096d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bca6c45d9939cbd1b55f6eb38d3a4539d0aa777038098133e2a96f860f3096d", kill_on_drop: false }`
[INFO] [stdout] 9bca6c45d9939cbd1b55f6eb38d3a4539d0aa777038098133e2a96f860f3096d
