[INFO] fetching crate numb_rs 0.0.4... [INFO] checking numb_rs-0.0.4 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056 [INFO] extracting crate numb_rs 0.0.4 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate numb_rs 0.0.4 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate numb_rs 0.0.4 [INFO] finished tweaking crates.io crate numb_rs 0.0.4 [INFO] tweaked toml for crates.io crate numb_rs 0.0.4 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7b60183e3a67a5f650ac0fd8be2aba28a9a450519ecbe74e648aa9770c0f9cbe [INFO] running `Command { std: "docker" "start" "-a" "7b60183e3a67a5f650ac0fd8be2aba28a9a450519ecbe74e648aa9770c0f9cbe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7b60183e3a67a5f650ac0fd8be2aba28a9a450519ecbe74e648aa9770c0f9cbe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7b60183e3a67a5f650ac0fd8be2aba28a9a450519ecbe74e648aa9770c0f9cbe", kill_on_drop: false }` [INFO] [stdout] 7b60183e3a67a5f650ac0fd8be2aba28a9a450519ecbe74e648aa9770c0f9cbe [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 24c085029f77693eddb5e5e2c2b2a1725f16ff3759c6728b9ee9ec4bf3ac1b9b [INFO] running `Command { std: "docker" "start" "-a" "24c085029f77693eddb5e5e2c2b2a1725f16ff3759c6728b9ee9ec4bf3ac1b9b", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling semver v1.0.4 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling syn v1.0.76 [INFO] [stderr] Checking itoa v0.4.8 [INFO] [stderr] Compiling serde_json v1.0.68 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking numb_rs v0.0.4 (/opt/rustwide/workdir) [INFO] [stderr] Checking itertools v0.10.1 [INFO] [stderr] Checking walkdir v2.3.2 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking crossbeam-utils v0.8.5 [INFO] [stderr] Checking bstr v0.2.17 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stdout] warning: field is never read: `m` [INFO] [stdout] --> src/dense.rs:563:5 [INFO] [stdout] | [INFO] [stdout] 563 | m: usize, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `n` [INFO] [stdout] --> src/dense.rs:564:5 [INFO] [stdout] | [INFO] [stdout] 564 | n: usize, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `m` [INFO] [stdout] --> src/dense.rs:570:5 [INFO] [stdout] | [INFO] [stdout] 570 | m: usize, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `n` [INFO] [stdout] --> src/dense.rs:571:5 [INFO] [stdout] | [INFO] [stdout] 571 | n: usize, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking clap v2.33.3 [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Checking csv v1.1.6 [INFO] [stderr] Compiling rustc_version v0.4.0 [INFO] [stderr] Checking crossbeam-epoch v0.9.5 [INFO] [stderr] Compiling cast v0.2.7 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stderr] Checking crossbeam-deque v0.8.1 [INFO] [stderr] Checking rayon-core v1.9.1 [INFO] [stderr] Checking criterion-plot v0.4.4 [INFO] [stderr] Checking plotters v0.3.1 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Compiling serde_derive v1.0.130 [INFO] [stderr] Checking criterion v0.3.5 [INFO] [stdout] warning: `#[macro_use]` only has an effect on `extern crate` and modules [INFO] [stdout] --> benches/matrix_benchmark.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_attributes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 116 | let half = frac32!(1, 2); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 123 | let a = frac32!(132, 203); [INFO] [stdout] | ----------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 129 | let a = frac32!(1, 2); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 130 | let b = frac32!(1, 4); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 132 | assert_eq!(a + b, frac32!(6, 8)); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 137 | let a = frac32!(1, 2); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 138 | let b = frac32!(1, 4); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 140 | assert_eq!(a - b, frac32!(2, 8)); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 145 | let a = frac32!(1, 2); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 146 | let b = frac32!(2, 5); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 148 | assert_eq!(a * b, frac32!(2, 10)); [INFO] [stdout] | -------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 153 | let a = frac32!(1, 2); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 154 | let b = frac32!(1, 4); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 156 | assert_eq!(a / b, frac32!(4, 2)); [INFO] [stdout] | ------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 161 | let a = frac32!(157684, 511974); [INFO] [stdout] | ----------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trailing semicolon in macro used in expression position [INFO] [stdout] --> src/fraction.rs:25:48 [INFO] [stdout] | [INFO] [stdout] 25 | Fraction::new($num as u32, $den as u32); [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 162 | assert_eq!(a.reduce(), frac32!(158, 513)) [INFO] [stdout] | ----------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #79813 [INFO] [stdout] = note: macro invocations at the end of a block are treated as expressions [INFO] [stdout] = note: to ignore the value produced by the macro, add a semicolon after the invocation of `frac32` [INFO] [stdout] = note: this warning originates in the macro `frac32` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `swap_rows` found for struct `numb_rs::Dense` in the current scope [INFO] [stdout] --> benches/matrix_benchmark.rs:13:50 [INFO] [stdout] | [INFO] [stdout] 13 | c.bench_function("row swap", |b| b.iter(|| x.swap_rows(0, 2))); [INFO] [stdout] | ^^^^^^^^^ method not found in `numb_rs::Dense<{integer}>` [INFO] [stdout] | [INFO] [stdout] ::: /opt/rustwide/workdir/src/matrix.rs:64:8 [INFO] [stdout] | [INFO] [stdout] 64 | fn swap_rows(&mut self, a: usize, b: usize); [INFO] [stdout] | --------- the method is available for `numb_rs::Dense<{integer}>` here [INFO] [stdout] | [INFO] [stdout] = help: items from traits can only be used if the trait is in scope [INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it: [INFO] [stdout] | [INFO] [stdout] 1 | use numb_rs::matrix::RowOps; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0599`. [INFO] [stdout] [INFO] [stderr] error: could not compile `numb_rs` due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: field is never read: `m` [INFO] [stdout] --> src/dense.rs:563:5 [INFO] [stdout] | [INFO] [stdout] 563 | m: usize, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `n` [INFO] [stdout] --> src/dense.rs:564:5 [INFO] [stdout] | [INFO] [stdout] 564 | n: usize, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `m` [INFO] [stdout] --> src/dense.rs:570:5 [INFO] [stdout] | [INFO] [stdout] 570 | m: usize, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `n` [INFO] [stdout] --> src/dense.rs:571:5 [INFO] [stdout] | [INFO] [stdout] 571 | n: usize, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/utilities.rs:100:9 [INFO] [stdout] | [INFO] [stdout] 100 | &a.assert_approx_eq(&b, 0.00005); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 100 | let _ = &a.assert_approx_eq(&b, 0.00005); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/utilities.rs:109:9 [INFO] [stdout] | [INFO] [stdout] 109 | &a.assert_approx_eq(&b, 0.00005); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 109 | let _ = &a.assert_approx_eq(&b, 0.00005); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 22 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "24c085029f77693eddb5e5e2c2b2a1725f16ff3759c6728b9ee9ec4bf3ac1b9b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "24c085029f77693eddb5e5e2c2b2a1725f16ff3759c6728b9ee9ec4bf3ac1b9b", kill_on_drop: false }` [INFO] [stdout] 24c085029f77693eddb5e5e2c2b2a1725f16ff3759c6728b9ee9ec4bf3ac1b9b