[INFO] fetching crate ffp 1.3.0... [INFO] testing ffp-1.3.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1 [INFO] extracting crate ffp 1.3.0 into /workspace/builds/worker-2-tc1/source [INFO] started tweaking crates.io crate ffp 1.3.0 [INFO] finished tweaking crates.io crate ffp 1.3.0 [INFO] tweaked toml for crates.io crate ffp 1.3.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate ffp 1.3.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate ffp 1.3.0 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded bit-vec v0.5.1 [INFO] [stderr] Downloaded backtrace-sys v0.1.35 [INFO] [stderr] Downloaded unicode-width v0.1.7 [INFO] [stderr] Downloaded quote v1.0.3 [INFO] [stderr] Downloaded failure v0.1.7 [INFO] [stderr] Downloaded cc v1.0.50 [INFO] [stderr] Downloaded libusb1-sys v0.3.6 [INFO] [stderr] Downloaded pkg-config v0.3.17 [INFO] [stderr] Downloaded libc v0.2.68 [INFO] [stderr] Downloaded vec_map v0.8.1 [INFO] [stderr] Downloaded proc-macro2 v1.0.10 [INFO] [stderr] Downloaded failure_derive v0.1.7 [INFO] [stderr] Downloaded libflate v0.1.27 [INFO] [stderr] Downloaded tar v0.4.26 [INFO] [stderr] Downloaded backtrace v0.3.46 [INFO] [stderr] Downloaded xattr v0.2.2 [INFO] [stderr] Downloaded bit-set v0.5.1 [INFO] [stderr] Downloaded filetime v0.2.9 [INFO] [stderr] Downloaded rusb v0.5.5 [INFO] [stderr] Downloaded synstructure v0.12.3 [INFO] [stderr] Downloaded rle-decode-fast v1.0.1 [INFO] [stderr] Downloaded hermit-abi v0.1.10 [INFO] [stderr] Downloaded clap v2.33.0 [INFO] [stderr] Downloaded vcpkg v0.2.8 [INFO] [stderr] Downloaded syn v1.0.17 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 73d4fa040505333157b1844c1e00c510f06b533b6d1c03d20ccd33e3dd4db879 [INFO] running `Command { std: "docker" "start" "-a" "73d4fa040505333157b1844c1e00c510f06b533b6d1c03d20ccd33e3dd4db879", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "73d4fa040505333157b1844c1e00c510f06b533b6d1c03d20ccd33e3dd4db879", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "73d4fa040505333157b1844c1e00c510f06b533b6d1c03d20ccd33e3dd4db879", kill_on_drop: false }` [INFO] [stdout] 73d4fa040505333157b1844c1e00c510f06b533b6d1c03d20ccd33e3dd4db879 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d51f9abddfef2b0fc588545aa9f1efd10359154eaba9ac6c96f83adf519c3209 [INFO] running `Command { std: "docker" "start" "-a" "d51f9abddfef2b0fc588545aa9f1efd10359154eaba9ac6c96f83adf519c3209", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.68 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling proc-macro2 v1.0.10 [INFO] [stderr] Compiling crc32fast v1.2.0 [INFO] [stderr] Compiling syn v1.0.17 [INFO] [stderr] Compiling take_mut v0.2.2 [INFO] [stderr] Compiling rle-decode-fast v1.0.1 [INFO] [stderr] Compiling adler32 v1.0.4 [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling failure_derive v0.1.7 [INFO] [stderr] Compiling unicode-width v0.1.7 [INFO] [stderr] Compiling bit-vec v0.5.1 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling vec_map v0.8.1 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling bit-set v0.5.1 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling libflate v0.1.27 [INFO] [stderr] Compiling backtrace-sys v0.1.35 [INFO] [stderr] Compiling xattr v0.2.2 [INFO] [stderr] Compiling filetime v0.2.9 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling tar v0.4.26 [INFO] [stderr] Compiling quote v1.0.3 [INFO] [stderr] Compiling libusb1-sys v0.3.6 [INFO] [stderr] Compiling backtrace v0.3.46 [INFO] [stderr] Compiling rusb v0.5.5 [INFO] [stderr] Compiling synstructure v0.12.3 [INFO] [stderr] Compiling failure v0.1.7 [INFO] [stderr] Compiling ffp v1.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/lib.rs:11:10 [INFO] [stdout] | [INFO] [stdout] 11 | #[derive(Fail, Debug)] [INFO] [stdout] | ^--- [INFO] [stdout] | | [INFO] [stdout] | `Fail` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_DERIVE_failure_Fail_FOR_FFPError` [INFO] [stdout] 12 | pub enum FFPError { [INFO] [stdout] | -------- `FFPError` is not local [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stdout] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stdout] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stdout] = note: `#[warn(non_local_definitions)]` on by default [INFO] [stdout] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/lib.rs:11:10 [INFO] [stdout] | [INFO] [stdout] 11 | #[derive(Fail, Debug)] [INFO] [stdout] | ^--- [INFO] [stdout] | | [INFO] [stdout] | `Display` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_DERIVE_failure_core_fmt_Display_FOR_FFPError` [INFO] [stdout] 12 | pub enum FFPError { [INFO] [stdout] | -------- `FFPError` is not local [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stdout] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stdout] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stdout] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.55s [INFO] running `Command { std: "docker" "inspect" "d51f9abddfef2b0fc588545aa9f1efd10359154eaba9ac6c96f83adf519c3209", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d51f9abddfef2b0fc588545aa9f1efd10359154eaba9ac6c96f83adf519c3209", kill_on_drop: false }` [INFO] [stdout] d51f9abddfef2b0fc588545aa9f1efd10359154eaba9ac6c96f83adf519c3209 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 12c61061c1755a5c06909d9911e778cbd780308ae9adc98892f21e1996a015b5 [INFO] running `Command { std: "docker" "start" "-a" "12c61061c1755a5c06909d9911e778cbd780308ae9adc98892f21e1996a015b5", kill_on_drop: false }` [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/lib.rs:11:10 [INFO] [stdout] | [INFO] [stdout] 11 | #[derive(Fail, Debug)] [INFO] [stdout] | ^--- [INFO] [stdout] | | [INFO] [stdout] | `Fail` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_DERIVE_failure_Fail_FOR_FFPError` [INFO] [stdout] 12 | pub enum FFPError { [INFO] [stdout] | -------- `FFPError` is not local [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stdout] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stdout] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stdout] = note: `#[warn(non_local_definitions)]` on by default [INFO] [stdout] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling ffp v1.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/lib.rs:11:10 [INFO] [stdout] | [INFO] [stdout] 11 | #[derive(Fail, Debug)] [INFO] [stdout] | ^--- [INFO] [stdout] | | [INFO] [stdout] | `Display` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_DERIVE_failure_core_fmt_Display_FOR_FFPError` [INFO] [stdout] 12 | pub enum FFPError { [INFO] [stdout] | -------- `FFPError` is not local [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stdout] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stdout] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stdout] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/lib.rs:11:10 [INFO] [stdout] | [INFO] [stdout] 11 | #[derive(Fail, Debug)] [INFO] [stdout] | ^--- [INFO] [stdout] | | [INFO] [stdout] | `Fail` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_DERIVE_failure_Fail_FOR_FFPError` [INFO] [stdout] 12 | pub enum FFPError { [INFO] [stdout] | -------- `FFPError` is not local [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stdout] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stdout] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stdout] = note: `#[warn(non_local_definitions)]` on by default [INFO] [stdout] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stdout] --> src/lib.rs:11:10 [INFO] [stdout] | [INFO] [stdout] 11 | #[derive(Fail, Debug)] [INFO] [stdout] | ^--- [INFO] [stdout] | | [INFO] [stdout] | `Display` is not local [INFO] [stdout] | move the `impl` block outside of this constant `_DERIVE_failure_core_fmt_Display_FOR_FFPError` [INFO] [stdout] 12 | pub enum FFPError { [INFO] [stdout] | -------- `FFPError` is not local [INFO] [stdout] | [INFO] [stdout] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stdout] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stdout] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stdout] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stdout] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s [INFO] running `Command { std: "docker" "inspect" "12c61061c1755a5c06909d9911e778cbd780308ae9adc98892f21e1996a015b5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "12c61061c1755a5c06909d9911e778cbd780308ae9adc98892f21e1996a015b5", kill_on_drop: false }` [INFO] [stdout] 12c61061c1755a5c06909d9911e778cbd780308ae9adc98892f21e1996a015b5 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] ef3454be59627f4d4eaa218ab335a33a198b658be6ad67e7eb817bc6c635a3e7 [INFO] running `Command { std: "docker" "start" "-a" "ef3454be59627f4d4eaa218ab335a33a198b658be6ad67e7eb817bc6c635a3e7", kill_on_drop: false }` [INFO] [stderr] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stderr] --> src/lib.rs:11:10 [INFO] [stderr] | [INFO] [stderr] 11 | #[derive(Fail, Debug)] [INFO] [stderr] | ^--- [INFO] [stderr] | | [INFO] [stderr] | `Fail` is not local [INFO] [stderr] | move the `impl` block outside of this constant `_DERIVE_failure_Fail_FOR_FFPError` [INFO] [stderr] 12 | pub enum FFPError { [INFO] [stderr] | -------- `FFPError` is not local [INFO] [stderr] | [INFO] [stderr] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stderr] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stderr] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stderr] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stderr] = note: `#[warn(non_local_definitions)]` on by default [INFO] [stderr] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item [INFO] [stderr] --> src/lib.rs:11:10 [INFO] [stderr] | [INFO] [stderr] 11 | #[derive(Fail, Debug)] [INFO] [stderr] | ^--- [INFO] [stderr] | | [INFO] [stderr] | `Display` is not local [INFO] [stderr] | move the `impl` block outside of this constant `_DERIVE_failure_core_fmt_Display_FOR_FFPError` [INFO] [stderr] 12 | pub enum FFPError { [INFO] [stderr] | -------- `FFPError` is not local [INFO] [stderr] | [INFO] [stderr] = note: the derive macro `Fail` defines the non-local `impl`, and may need to be changed [INFO] [stderr] = note: the derive macro `Fail` may come from an old version of the `failure_derive` crate, try updating your dependency with `cargo update -p failure_derive` [INFO] [stderr] = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl` [INFO] [stderr] = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint [INFO] [stderr] = note: this warning originates in the derive macro `Fail` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: `ffp` (lib) generated 2 warnings [INFO] [stderr] warning: `ffp` (lib test) generated 2 warnings (2 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ffp-b98fb39ee13edf83) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/ffp-de3803de84195d36) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests ffp [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "ef3454be59627f4d4eaa218ab335a33a198b658be6ad67e7eb817bc6c635a3e7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ef3454be59627f4d4eaa218ab335a33a198b658be6ad67e7eb817bc6c635a3e7", kill_on_drop: false }` [INFO] [stdout] ef3454be59627f4d4eaa218ab335a33a198b658be6ad67e7eb817bc6c635a3e7