[INFO] fetching crate jupyter-protocol 0.6.0...
[INFO] checking jupyter-protocol-0.6.0 against master#191df20fcad9331d3a948aa8e8556775ec3fe69d for pr-133502-3
[INFO] extracting crate jupyter-protocol 0.6.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate jupyter-protocol 0.6.0 on toolchain 191df20fcad9331d3a948aa8e8556775ec3fe69d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+191df20fcad9331d3a948aa8e8556775ec3fe69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jupyter-protocol 0.6.0
[INFO] finished tweaking crates.io crate jupyter-protocol 0.6.0
[INFO] tweaked toml for crates.io crate jupyter-protocol 0.6.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+191df20fcad9331d3a948aa8e8556775ec3fe69d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 37 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+191df20fcad9331d3a948aa8e8556775ec3fe69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uuid v1.16.0
[INFO] [stderr]   Downloaded sha1_smol v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+191df20fcad9331d3a948aa8e8556775ec3fe69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2090cc903ff62b6758d20a826821c6e0ead98051b5148dc16379b9dbd5612f7e
[INFO] running `Command { std: "docker" "start" "-a" "2090cc903ff62b6758d20a826821c6e0ead98051b5148dc16379b9dbd5612f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2090cc903ff62b6758d20a826821c6e0ead98051b5148dc16379b9dbd5612f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2090cc903ff62b6758d20a826821c6e0ead98051b5148dc16379b9dbd5612f7e", kill_on_drop: false }`
[INFO] [stdout] 2090cc903ff62b6758d20a826821c6e0ead98051b5148dc16379b9dbd5612f7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+191df20fcad9331d3a948aa8e8556775ec3fe69d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 166e83a961fc55062312c7c17f6c8e3a8e162d42a40f901e797957a58243da0b
[INFO] running `Command { std: "docker" "start" "-a" "166e83a961fc55062312c7c17f6c8e3a8e162d42a40f901e797957a58243da0b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking sha1_smol v1.0.1
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling async-trait v0.1.88
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking uuid v1.16.0
[INFO] [stderr]     Checking chrono v0.4.40
[INFO] [stderr]     Checking jupyter-protocol v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/messaging.rs:608:17
[INFO] [stdout]     |
[INFO] [stdout] 608 |                   #[must_use]
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 631 | / impl_message_traits!(
[INFO] [stdout] 632 | |     ClearOutput,
[INFO] [stdout] 633 | |     CommClose,
[INFO] [stdout] 634 | |     CommInfoReply,
[INFO] [stdout] ...   |
[INFO] [stdout] 665 | |     UnknownMessage
[INFO] [stdout] 666 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_message_traits` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/messaging.rs:616:17
[INFO] [stdout]     |
[INFO] [stdout] 616 |                   #[must_use]
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 631 | / impl_message_traits!(
[INFO] [stdout] 632 | |     ClearOutput,
[INFO] [stdout] 633 | |     CommClose,
[INFO] [stdout] 634 | |     CommInfoReply,
[INFO] [stdout] ...   |
[INFO] [stdout] 665 | |     UnknownMessage
[INFO] [stdout] 666 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_message_traits` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/messaging.rs:730:5
[INFO] [stdout]     |
[INFO] [stdout] 730 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/messaging.rs:738:5
[INFO] [stdout]     |
[INFO] [stdout] 738 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/messaging.rs:608:17
[INFO] [stdout]     |
[INFO] [stdout] 608 |                   #[must_use]
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 631 | / impl_message_traits!(
[INFO] [stdout] 632 | |     ClearOutput,
[INFO] [stdout] 633 | |     CommClose,
[INFO] [stdout] 634 | |     CommInfoReply,
[INFO] [stdout] ...   |
[INFO] [stdout] 665 | |     UnknownMessage
[INFO] [stdout] 666 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_message_traits` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/messaging.rs:616:17
[INFO] [stdout]     |
[INFO] [stdout] 616 |                   #[must_use]
[INFO] [stdout]     |                   ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 631 | / impl_message_traits!(
[INFO] [stdout] 632 | |     ClearOutput,
[INFO] [stdout] 633 | |     CommClose,
[INFO] [stdout] 634 | |     CommInfoReply,
[INFO] [stdout] ...   |
[INFO] [stdout] 665 | |     UnknownMessage
[INFO] [stdout] 666 | | );
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_message_traits` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/messaging.rs:730:5
[INFO] [stdout]     |
[INFO] [stdout] 730 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/messaging.rs:738:5
[INFO] [stdout]     |
[INFO] [stdout] 738 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.77s
[INFO] running `Command { std: "docker" "inspect" "166e83a961fc55062312c7c17f6c8e3a8e162d42a40f901e797957a58243da0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "166e83a961fc55062312c7c17f6c8e3a8e162d42a40f901e797957a58243da0b", kill_on_drop: false }`
[INFO] [stdout] 166e83a961fc55062312c7c17f6c8e3a8e162d42a40f901e797957a58243da0b