[INFO] fetching crate fg-stitch-lib 0.1.1...
[INFO] building fg-stitch-lib-0.1.1 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate fg-stitch-lib 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate fg-stitch-lib 0.1.1
[INFO] finished tweaking crates.io crate fg-stitch-lib 0.1.1
[INFO] tweaked toml for crates.io crate fg-stitch-lib 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fg-stitch-lib 0.1.1 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/align/aligners/constants.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `low_mem`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/align/aligners/constants.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `low_mem`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/align/alignment.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `low_mem`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `low_mem`
[INFO] [stdout]   --> src/align/traceback/mod.rs:63:14
[INFO] [stdout]    |
[INFO] [stdout] 63 |     if #[cfg(low_mem)] {
[INFO] [stdout]    |              ^^^^^^^ help: found config with similar value: `feature = "low_mem"`
[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(low_mem)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(low_mem)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimpleCell` is never constructed
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct SimpleCell {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TB_I_POS` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:30:7
[INFO] [stdout]    |
[INFO] [stdout] 30 | const TB_I_POS: u16 = 0; // Meaning bits 0,1,2,3 corresponds to I and so on
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TB_D_POS` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 31 | const TB_D_POS: u16 = 4;
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TB_S_POS` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:32:7
[INFO] [stdout]    |
[INFO] [stdout] 32 | const TB_S_POS: u16 = 8;
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TB_IDX_POS` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:33:7
[INFO] [stdout]    |
[INFO] [stdout] 33 | const TB_IDX_POS: u16 = 12;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TB_MASK` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 | const TB_MASK: u16 = 0b1111;
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AUX_IDX_MASK` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:35:7
[INFO] [stdout]    |
[INFO] [stdout] 35 | const AUX_IDX_MASK: u32 = 0b1111;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AUX_FROM_MASK` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:36:7
[INFO] [stdout]    |
[INFO] [stdout] 36 | const AUX_FROM_MASK: u32 = 0b1111_1111_1111_1111_1111_1111_1111;
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `set_tb` and `get_tb` are never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl SimpleCell {
[INFO] [stdout]    | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn set_tb(&mut self, pos: u16, value: u16) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn get_tb(self, pos: u16) -> u16 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/util/target_seq.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn build_target_hash(&self, k: usize) -> TargetHash {
[INFO] [stdout]    |                              ^^^^^               ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn build_target_hash(&self, k: usize) -> TargetHash<'_> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 42s
[INFO] running `Command { std: "docker" "inspect" "1dd6216879d6eb685fa5899aea7bd291e2f8b0d0d23ff787e8d031f565fc4490", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dd6216879d6eb685fa5899aea7bd291e2f8b0d0d23ff787e8d031f565fc4490", kill_on_drop: false }`
[INFO] [stdout] 1dd6216879d6eb685fa5899aea7bd291e2f8b0d0d23ff787e8d031f565fc4490
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 567b79c92b96713ee75464ef9b81d40d8efb3a18d3c103fb2776a1682a2ddf4f
[INFO] running `Command { std: "docker" "start" "-a" "567b79c92b96713ee75464ef9b81d40d8efb3a18d3c103fb2776a1682a2ddf4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling flume v0.10.14
[INFO] [stderr]    Compiling rstest_macros v0.17.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]    Compiling derive-getters v0.3.0
[INFO] [stderr]    Compiling nalgebra v0.29.0
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]    Compiling derive_builder_core v0.12.0
[INFO] [stderr]    Compiling rstest v0.17.0
[INFO] [stderr]    Compiling derive_builder_macro v0.12.0
[INFO] [stderr]    Compiling derive_builder v0.12.0
[INFO] [stderr]    Compiling statrs v0.16.1
[INFO] [stderr]    Compiling bio v1.6.0
[INFO] [stderr]    Compiling fg-stitch-lib v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/align/aligners/constants.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `low_mem`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/align/aligners/constants.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `low_mem`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/align/alignment.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `low_mem`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `low_mem`
[INFO] [stdout]   --> src/align/traceback/mod.rs:63:14
[INFO] [stdout]    |
[INFO] [stdout] 63 |     if #[cfg(low_mem)] {
[INFO] [stdout]    |              ^^^^^^^ help: found config with similar value: `feature = "low_mem"`
[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(low_mem)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(low_mem)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SimpleCell` is never constructed
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct SimpleCell {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TB_I_POS` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:30:7
[INFO] [stdout]    |
[INFO] [stdout] 30 | const TB_I_POS: u16 = 0; // Meaning bits 0,1,2,3 corresponds to I and so on
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TB_D_POS` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 31 | const TB_D_POS: u16 = 4;
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TB_S_POS` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:32:7
[INFO] [stdout]    |
[INFO] [stdout] 32 | const TB_S_POS: u16 = 8;
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TB_IDX_POS` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:33:7
[INFO] [stdout]    |
[INFO] [stdout] 33 | const TB_IDX_POS: u16 = 12;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TB_MASK` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:34:7
[INFO] [stdout]    |
[INFO] [stdout] 34 | const TB_MASK: u16 = 0b1111;
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AUX_IDX_MASK` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:35:7
[INFO] [stdout]    |
[INFO] [stdout] 35 | const AUX_IDX_MASK: u32 = 0b1111;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AUX_FROM_MASK` is never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:36:7
[INFO] [stdout]    |
[INFO] [stdout] 36 | const AUX_FROM_MASK: u32 = 0b1111_1111_1111_1111_1111_1111_1111;
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `set_tb` and `get_tb` are never used
[INFO] [stdout]   --> src/align/traceback/simple_cell.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl SimpleCell {
[INFO] [stdout]    | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn set_tb(&mut self, pos: u16, value: u16) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn get_tb(self, pos: u16) -> u16 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/util/target_seq.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn build_target_hash(&self, k: usize) -> TargetHash {
[INFO] [stdout]    |                              ^^^^^               ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn build_target_hash(&self, k: usize) -> TargetHash<'_> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/align/aligners/constants.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `low_mem`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/align/aligners/constants.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `low_mem`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/align/alignment.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `low_mem`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `low_mem`
[INFO] [stdout]   --> src/align/traceback/mod.rs:63:14
[INFO] [stdout]    |
[INFO] [stdout] 63 |     if #[cfg(low_mem)] {
[INFO] [stdout]    |              ^^^^^^^ help: found config with similar value: `feature = "low_mem"`
[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(low_mem)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(low_mem)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/util/target_seq.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn build_target_hash(&self, k: usize) -> TargetHash {
[INFO] [stdout]    |                              ^^^^^               ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn build_target_hash(&self, k: usize) -> TargetHash<'_> {
[INFO] [stdout]    |                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 41.29s
[INFO] running `Command { std: "docker" "inspect" "567b79c92b96713ee75464ef9b81d40d8efb3a18d3c103fb2776a1682a2ddf4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "567b79c92b96713ee75464ef9b81d40d8efb3a18d3c103fb2776a1682a2ddf4f", kill_on_drop: false }`
[INFO] [stdout] 567b79c92b96713ee75464ef9b81d40d8efb3a18d3c103fb2776a1682a2ddf4f
