[INFO] fetching crate jiao-cairo 0.3.5...
[INFO] checking jiao-cairo-0.3.5 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate jiao-cairo 0.3.5 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate jiao-cairo 0.3.5 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 jiao-cairo 0.3.5
[INFO] finished tweaking crates.io crate jiao-cairo 0.3.5
[INFO] tweaked toml for crates.io crate jiao-cairo 0.3.5 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 62 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cairo-rs v0.17.10 (latest: v0.19.4)
[INFO] [stderr]       Adding cairo-sys-rs v0.17.10 (latest: v0.19.2)
[INFO] [stderr]       Adding gio-sys v0.17.10 (latest: v0.19.5)
[INFO] [stderr]       Adding glib v0.17.10 (latest: v0.19.5)
[INFO] [stderr]       Adding glib-macros v0.17.10 (latest: v0.19.5)
[INFO] [stderr]       Adding glib-sys v0.17.10 (latest: v0.19.5)
[INFO] [stderr]       Adding gobject-sys v0.17.10 (latest: v0.19.5)
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding jiao v0.3.5 (latest: v0.4.1)
[INFO] [stderr]       Adding proc-macro-crate v1.3.1 (latest: v3.1.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.60)
[INFO] [stderr]       Adding toml_edit v0.19.15 (latest: v0.22.12)
[INFO] [stderr]       Adding winnow v0.5.40 (latest: v0.6.7)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded glib-sys v0.17.10
[INFO] [stderr]   Downloaded gobject-sys v0.17.10
[INFO] [stderr]   Downloaded cairo-sys-rs v0.17.10
[INFO] [stderr]   Downloaded jiao v0.3.5
[INFO] [stderr]   Downloaded gio-sys v0.17.10
[INFO] [stderr]   Downloaded glib-macros v0.17.10
[INFO] [stderr]   Downloaded glib v0.17.10
[INFO] [stderr]   Downloaded cairo-rs v0.17.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f4f7dc7461bf9a988a13552d9e5cb64f0cbfe56ddbce3a4e44160a2464f76b60
[INFO] running `Command { std: "docker" "start" "-a" "f4f7dc7461bf9a988a13552d9e5cb64f0cbfe56ddbce3a4e44160a2464f76b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4f7dc7461bf9a988a13552d9e5cb64f0cbfe56ddbce3a4e44160a2464f76b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4f7dc7461bf9a988a13552d9e5cb64f0cbfe56ddbce3a4e44160a2464f76b60", kill_on_drop: false }`
[INFO] [stdout] f4f7dc7461bf9a988a13552d9e5cb64f0cbfe56ddbce3a4e44160a2464f76b60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 41718a334d9a230064b3abb938c2c012306ad51f529e7cdc0e12d8be12a3e775
[INFO] running `Command { std: "docker" "start" "-a" "41718a334d9a230064b3abb938c2c012306ad51f529e7cdc0e12d8be12a3e775", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.200
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling target-lexicon v0.12.14
[INFO] [stderr]    Compiling winnow v0.6.7
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling version-compare v0.2.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling anyhow v1.0.82
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.59
[INFO] [stderr]    Compiling cfg-expr v0.15.8
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.200
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking thiserror v1.0.59
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling serde_spanned v0.6.5
[INFO] [stderr]    Compiling toml_edit v0.22.12
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling toml v0.8.12
[INFO] [stderr]    Compiling glib-macros v0.17.10
[INFO] [stderr]    Compiling system-deps v6.2.2
[INFO] [stderr]    Compiling glib-sys v0.17.10
[INFO] [stderr]    Compiling gobject-sys v0.17.10
[INFO] [stderr]    Compiling gio-sys v0.17.10
[INFO] [stderr]    Compiling cairo-sys-rs v0.17.10
[INFO] [stderr]     Checking jiao v0.3.5
[INFO] [stderr]     Checking glib v0.17.10
[INFO] [stderr]     Checking cairo-rs v0.17.10
[INFO] [stderr]     Checking jiao-cairo v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]  --> src/error.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Error(cairo::Error);
[INFO] [stdout]   |            ----- ^^^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     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 | pub struct Error(());
[INFO] [stdout]   |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]  --> src/error.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Error(cairo::Error);
[INFO] [stdout]   |            ----- ^^^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     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 | pub struct Error(());
[INFO] [stdout]   |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jiao-cairo` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `jiao-cairo` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "41718a334d9a230064b3abb938c2c012306ad51f529e7cdc0e12d8be12a3e775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41718a334d9a230064b3abb938c2c012306ad51f529e7cdc0e12d8be12a3e775", kill_on_drop: false }`
[INFO] [stdout] 41718a334d9a230064b3abb938c2c012306ad51f529e7cdc0e12d8be12a3e775
[INFO] checking jiao-cairo-0.3.5 against try#9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88 for pr-124157
[INFO] extracting crate jiao-cairo 0.3.5 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate jiao-cairo 0.3.5 on toolchain 9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jiao-cairo 0.3.5
[INFO] finished tweaking crates.io crate jiao-cairo 0.3.5
[INFO] tweaked toml for crates.io crate jiao-cairo 0.3.5 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 62 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cairo-rs v0.17.10 (latest: v0.19.4)
[INFO] [stderr]       Adding cairo-sys-rs v0.17.10 (latest: v0.19.2)
[INFO] [stderr]       Adding gio-sys v0.17.10 (latest: v0.19.5)
[INFO] [stderr]       Adding glib v0.17.10 (latest: v0.19.5)
[INFO] [stderr]       Adding glib-macros v0.17.10 (latest: v0.19.5)
[INFO] [stderr]       Adding glib-sys v0.17.10 (latest: v0.19.5)
[INFO] [stderr]       Adding gobject-sys v0.17.10 (latest: v0.19.5)
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding jiao v0.3.5 (latest: v0.4.1)
[INFO] [stderr]       Adding proc-macro-crate v1.3.1 (latest: v3.1.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.60)
[INFO] [stderr]       Adding toml_edit v0.19.15 (latest: v0.22.12)
[INFO] [stderr]       Adding winnow v0.5.40 (latest: v0.6.7)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09dd1a475d0a94d678e4802f19d4e3305856a4dd0cec6d892ac5d1b0687ef1ea
[INFO] running `Command { std: "docker" "start" "-a" "09dd1a475d0a94d678e4802f19d4e3305856a4dd0cec6d892ac5d1b0687ef1ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09dd1a475d0a94d678e4802f19d4e3305856a4dd0cec6d892ac5d1b0687ef1ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09dd1a475d0a94d678e4802f19d4e3305856a4dd0cec6d892ac5d1b0687ef1ea", kill_on_drop: false }`
[INFO] [stdout] 09dd1a475d0a94d678e4802f19d4e3305856a4dd0cec6d892ac5d1b0687ef1ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fdb0b6bf4eb883bf44382925bb4ee7c02019cc434d5bc70a500ef3b87ee8b8e9
[INFO] running `Command { std: "docker" "start" "-a" "fdb0b6bf4eb883bf44382925bb4ee7c02019cc434d5bc70a500ef3b87ee8b8e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.200
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling target-lexicon v0.12.14
[INFO] [stderr]    Compiling winnow v0.6.7
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling version-compare v0.2.0
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling anyhow v1.0.82
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.59
[INFO] [stderr]    Compiling cfg-expr v0.15.8
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.200
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking thiserror v1.0.59
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling serde_spanned v0.6.5
[INFO] [stderr]    Compiling toml_edit v0.22.12
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling toml v0.8.12
[INFO] [stderr]    Compiling glib-macros v0.17.10
[INFO] [stderr]    Compiling system-deps v6.2.2
[INFO] [stderr]    Compiling glib-sys v0.17.10
[INFO] [stderr]    Compiling gobject-sys v0.17.10
[INFO] [stderr]    Compiling gio-sys v0.17.10
[INFO] [stderr]    Compiling cairo-sys-rs v0.17.10
[INFO] [stderr]     Checking jiao v0.3.5
[INFO] [stderr]     Checking glib v0.17.10
[INFO] [stderr]     Checking cairo-rs v0.17.10
[INFO] [stderr]     Checking jiao-cairo v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]  --> src/error.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Error(cairo::Error);
[INFO] [stdout]   |            ----- ^^^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     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 | pub struct Error(());
[INFO] [stdout]   |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field `0` is never read
[INFO] [stdout]  --> src/error.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Error(cairo::Error);
[INFO] [stdout]   |            ----- ^^^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     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 | pub struct Error(());
[INFO] [stdout]   |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jiao-cairo` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `jiao-cairo` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "fdb0b6bf4eb883bf44382925bb4ee7c02019cc434d5bc70a500ef3b87ee8b8e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdb0b6bf4eb883bf44382925bb4ee7c02019cc434d5bc70a500ef3b87ee8b8e9", kill_on_drop: false }`
[INFO] [stdout] fdb0b6bf4eb883bf44382925bb4ee7c02019cc434d5bc70a500ef3b87ee8b8e9
