[INFO] fetching crate sensulator 0.5.0...
[INFO] checking sensulator-0.5.0 against c60b92c03ca8a3b101eb9d57f51e2232690638c7 for pr-164148-crater-rollup
[INFO] extracting crate sensulator 0.5.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate sensulator 0.5.0
[INFO] finished tweaking crates.io crate sensulator 0.5.0
[INFO] tweaked toml for crates.io crate sensulator 0.5.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sensulator 0.5.0 on toolchain c60b92c03ca8a3b101eb9d57f51e2232690638c7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sensulator 0.5.0 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" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 2545a110a953f335aa5b30c93525be4cb59c21ac18ceada55d52a9fad0f45efe
[INFO] running `Command { std: "docker" "start" "2545a110a953f335aa5b30c93525be4cb59c21ac18ceada55d52a9fad0f45efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2545a110a953f335aa5b30c93525be4cb59c21ac18ceada55d52a9fad0f45efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2545a110a953f335aa5b30c93525be4cb59c21ac18ceada55d52a9fad0f45efe" "/opt/rustwide/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2545a110a953f335aa5b30c93525be4cb59c21ac18ceada55d52a9fad0f45efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2545a110a953f335aa5b30c93525be4cb59c21ac18ceada55d52a9fad0f45efe" "/opt/rustwide/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.7.0
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking quickcheck v1.0.3
[INFO] [stderr]     Checking sensulator v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand_distr::num_traits::Float`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use rand_distr::num_traits::Float;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:38:88
[INFO] [stdout]    |
[INFO] [stdout] 38 |   pub fn new(ctr_val: MeasureVal, abs_err_range: MeasureVal, rel_err: MeasureVal, rng: &mut T) -> Sensulator<T> {
[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] 38 |   pub fn new(ctr_val: MeasureVal, abs_err_range: MeasureVal, rel_err: MeasureVal, rng: &mut T) -> Sensulator<'_, T> {
[INFO] [stdout]    |                                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `f32` sensulator
[INFO] [stdout]   --> src/lib.rs:67:62
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let abs_err_dist = rand_distr::Normal::<MeasureVal>::new(0f32.into(), std_dev.into() );
[INFO] [stdout]    |                                                              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 67 -     let abs_err_dist = rand_distr::Normal::<MeasureVal>::new(0f32.into(), std_dev.into() );
[INFO] [stdout] 67 +     let abs_err_dist = rand_distr::Normal::<MeasureVal>::new(0f32, std_dev.into() );
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 67 -     let abs_err_dist = rand_distr::Normal::<MeasureVal>::new(0f32.into(), std_dev.into() );
[INFO] [stdout] 67 +     let abs_err_dist = rand_distr::Normal::<MeasureVal>::new(<f32 as Into<_>>::into(0f32), std_dev.into() );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `f32` sensulator
[INFO] [stdout]   --> src/lib.rs:67:75
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let abs_err_dist = rand_distr::Normal::<MeasureVal>::new(0f32.into(), std_dev.into() );
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 67 -     let abs_err_dist = rand_distr::Normal::<MeasureVal>::new(0f32.into(), std_dev.into() );
[INFO] [stdout] 67 +     let abs_err_dist = rand_distr::Normal::<MeasureVal>::new(0f32.into(), std_dev );
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 67 -     let abs_err_dist = rand_distr::Normal::<MeasureVal>::new(0f32.into(), std_dev.into() );
[INFO] [stdout] 67 +     let abs_err_dist = rand_distr::Normal::<MeasureVal>::new(0f32.into(), <f32 as Into<_>>::into(std_dev) );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sensulator` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2545a110a953f335aa5b30c93525be4cb59c21ac18ceada55d52a9fad0f45efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2545a110a953f335aa5b30c93525be4cb59c21ac18ceada55d52a9fad0f45efe", kill_on_drop: false }`
[INFO] [stdout] 2545a110a953f335aa5b30c93525be4cb59c21ac18ceada55d52a9fad0f45efe
