[INFO] fetching crate cargo-matrix 0.2.1... [INFO] testing cargo-matrix-0.2.1 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0 [INFO] extracting crate cargo-matrix 0.2.1 into /workspace/builds/worker-2-tc1/source [INFO] started tweaking crates.io crate cargo-matrix 0.2.1 [INFO] finished tweaking crates.io crate cargo-matrix 0.2.1 [INFO] tweaked toml for crates.io crate cargo-matrix 0.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate cargo-matrix 0.2.1 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate cargo-matrix 0.2.1 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded cargo-platform v0.1.7 [INFO] [stderr] Downloaded yansi v1.0.0-rc.1 [INFO] [stderr] Downloaded derive_more v1.0.0-beta.6 [INFO] [stderr] Downloaded figment v0.10.14 [INFO] [stderr] Downloaded derive_more-impl v1.0.0-beta.6 [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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 95979c1c100eaa75caa317cc2617e3906b20559f0292f00020ba57740dd51c6d [INFO] running `Command { std: "docker" "start" "-a" "95979c1c100eaa75caa317cc2617e3906b20559f0292f00020ba57740dd51c6d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "95979c1c100eaa75caa317cc2617e3906b20559f0292f00020ba57740dd51c6d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "95979c1c100eaa75caa317cc2617e3906b20559f0292f00020ba57740dd51c6d", kill_on_drop: false }` [INFO] [stdout] 95979c1c100eaa75caa317cc2617e3906b20559f0292f00020ba57740dd51c6d [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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] ad9d1d80d44d82635a70187b9a6c36393e014fbfa1d1ab317dfaf4f4e7399218 [INFO] running `Command { std: "docker" "start" "-a" "ad9d1d80d44d82635a70187b9a6c36393e014fbfa1d1ab317dfaf4f4e7399218", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.78 [INFO] [stderr] Compiling serde v1.0.196 [INFO] [stderr] Compiling serde_json v1.0.113 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling utf8parse v0.2.1 [INFO] [stderr] Compiling camino v1.1.6 [INFO] [stderr] Compiling ryu v1.0.16 [INFO] [stderr] Compiling thiserror v1.0.57 [INFO] [stderr] Compiling colorchoice v1.0.0 [INFO] [stderr] Compiling itoa v1.0.10 [INFO] [stderr] Compiling semver v1.0.21 [INFO] [stderr] Compiling anstyle v1.0.6 [INFO] [stderr] Compiling anstyle-query v1.0.2 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling uncased v0.9.10 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling figment v0.10.14 [INFO] [stderr] Compiling anstyle-parse v0.2.3 [INFO] [stderr] Compiling anyhow v1.0.79 [INFO] [stderr] Compiling heck v0.4.1 [INFO] [stderr] Compiling clap_lex v0.7.0 [INFO] [stderr] Compiling strsim v0.11.0 [INFO] [stderr] Compiling anstream v0.6.11 [INFO] [stderr] Compiling cargo-matrix v0.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Compiling either v1.10.0 [INFO] [stderr] Compiling yansi v1.0.0-rc.1 [INFO] [stderr] Compiling itertools v0.12.1 [INFO] [stderr] Compiling clap_builder v4.5.1 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Compiling syn v2.0.49 [INFO] [stderr] Compiling getset v0.1.2 [INFO] [stderr] Compiling serde_derive v1.0.196 [INFO] [stderr] Compiling thiserror-impl v1.0.57 [INFO] [stderr] Compiling derive_more-impl v1.0.0-beta.6 [INFO] [stderr] Compiling clap_derive v4.5.0 [INFO] [stderr] Compiling derive_more v1.0.0-beta.6 [INFO] [stderr] Compiling clap v4.5.1 [INFO] [stderr] Compiling cargo-platform v0.1.7 [INFO] [stderr] Compiling cargo_metadata v0.18.1 [INFO] [stdout] warning: lint `box_pointers` has been removed: it does not detect other kinds of allocations, and existed only for historical reasons [INFO] [stdout] --> src/main.rs:25:28 [INFO] [stdout] | [INFO] [stdout] 25 | #![cfg_attr(nightly, allow(box_pointers, single_use_lifetimes,))] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(renamed_and_removed_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lint `byte_slice_in_packed_struct_with_derive` has been removed: converted into hard error, see issue #107457 for more information [INFO] [stdout] --> src/main.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | byte_slice_in_packed_struct_with_derive, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lint `const_patterns_without_partial_eq` has been removed: converted into hard error, see RFC #3535 for more information [INFO] [stdout] --> src/main.rs:46:9 [INFO] [stdout] | [INFO] [stdout] 46 | const_patterns_without_partial_eq, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lint `indirect_structural_match` has been removed: converted into hard error, see RFC #3535 for more information [INFO] [stdout] --> src/main.rs:73:9 [INFO] [stdout] | [INFO] [stdout] 73 | indirect_structural_match, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lint `pointer_structural_match` has been removed: converted into hard error, see RFC #3535 for more information [INFO] [stdout] --> src/main.rs:107:9 [INFO] [stdout] | [INFO] [stdout] 107 | pointer_structural_match, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: lint `static_mut_ref` has been renamed to `static_mut_refs` [INFO] [stdout] --> src/main.rs:121:9 [INFO] [stdout] | [INFO] [stdout] 121 | static_mut_ref, [INFO] [stdout] | ^^^^^^^^^^^^^^ help: use the new name: `static_mut_refs` [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/main.rs:112:9 [INFO] [stdout] | [INFO] [stdout] 112 | renamed_and_removed_lints, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: lint `suspicious_auto_trait_impls` has been removed: no longer needed, see issue #93367 for more information [INFO] [stdout] --> src/main.rs:122:9 [INFO] [stdout] | [INFO] [stdout] 122 | suspicious_auto_trait_impls, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: lint `temporary_cstring_as_ptr` has been renamed to `dangling_pointers_from_temporaries` [INFO] [stdout] --> src/main.rs:124:9 [INFO] [stdout] | [INFO] [stdout] 124 | temporary_cstring_as_ptr, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dangling_pointers_from_temporaries` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: lint `undefined_naked_function_abi` has been removed: converted into hard error, see PR #139001 for more information [INFO] [stdout] --> src/main.rs:132:9 [INFO] [stdout] | [INFO] [stdout] 132 | undefined_naked_function_abi, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unknown lint: `unsupported_calling_conventions` [INFO] [stdout] --> src/main.rs:146:9 [INFO] [stdout] | [INFO] [stdout] 146 | unsupported_calling_conventions, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: did you mean: `unsupported_fn_ptr_calling_conventions` [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/main.rs:137:9 [INFO] [stdout] | [INFO] [stdout] 137 | unknown_lints, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: lint `where_clauses_object_safety` has been removed: converted into hard error, see PR #125380 for more information [INFO] [stdout] --> src/main.rs:172:9 [INFO] [stdout] | [INFO] [stdout] 172 | where_clauses_object_safety, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: lint `writes_through_immutable_pointer` has been removed: converted into hard error [INFO] [stdout] --> src/main.rs:174:9 [INFO] [stdout] | [INFO] [stdout] 174 | writes_through_immutable_pointer, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `nightly` [INFO] [stdout] --> src/main.rs:13:31 [INFO] [stdout] | [INFO] [stdout] 13 | all(feature = "unstable", nightly), [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `docsrs`, `feature`, and `test` and 31 more [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/main.rs:133:9 [INFO] [stdout] | [INFO] [stdout] 133 | unexpected_cfgs, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `nightly` [INFO] [stdout] --> src/main.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 25 | #![cfg_attr(nightly, allow(box_pointers, single_use_lifetimes,))] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `nightly` [INFO] [stdout] --> src/main.rs:27:5 [INFO] [stdout] | [INFO] [stdout] 27 | nightly, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `nightly` [INFO] [stdout] --> src/main.rs:178:39 [INFO] [stdout] | [INFO] [stdout] 178 | #![cfg_attr(all(feature = "unstable", nightly), allow(unstable_features))] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `nightly` [INFO] [stdout] --> src/main.rs:180:44 [INFO] [stdout] | [INFO] [stdout] 180 | #![cfg_attr(all(not(feature = "unstable"), nightly), deny(unstable_features))] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `nightly` [INFO] [stdout] --> src/main.rs:183:31 [INFO] [stdout] | [INFO] [stdout] 183 | all(feature = "unstable", nightly), [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `nightly` [INFO] [stdout] --> src/main.rs:196:13 [INFO] [stdout] | [INFO] [stdout] 196 | #![cfg_attr(nightly, deny(clippy::all, clippy::pedantic))] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `nightly` [INFO] [stdout] --> src/main.rs:199:5 [INFO] [stdout] | [INFO] [stdout] 199 | nightly, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `nightly` [INFO] [stdout] --> src/main.rs:211:9 [INFO] [stdout] | [INFO] [stdout] 211 | all(nightly, feature = "unstable"), [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `nightly` [INFO] [stdout] --> src/main.rs:214:22 [INFO] [stdout] | [INFO] [stdout] 214 | #![cfg_attr(all(doc, nightly), feature(doc_auto_cfg))] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `nightly` [INFO] [stdout] --> src/main.rs:215:25 [INFO] [stdout] | [INFO] [stdout] 215 | #![cfg_attr(all(docsrs, nightly), feature(doc_cfg))] [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unexpected `cfg` condition name: `coverage_nightly` [INFO] [stdout] --> src/main.rs:216:13 [INFO] [stdout] | [INFO] [stdout] 216 | #![cfg_attr(coverage_nightly, feature(coverage_attribute))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(coverage_nightly)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(coverage_nightly)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `cargo-matrix` (bin "cargo-matrix") due to 19 previous errors; 5 warnings emitted [INFO] running `Command { std: "docker" "inspect" "ad9d1d80d44d82635a70187b9a6c36393e014fbfa1d1ab317dfaf4f4e7399218", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ad9d1d80d44d82635a70187b9a6c36393e014fbfa1d1ab317dfaf4f4e7399218", kill_on_drop: false }` [INFO] [stdout] ad9d1d80d44d82635a70187b9a6c36393e014fbfa1d1ab317dfaf4f4e7399218