[INFO] crate vikos 0.3.1 is already in cache
[INFO] checking vikos-0.3.1 against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] extracting crate vikos 0.3.1 into work/builds/worker-0/source
[INFO] validating manifest of crates.io crate vikos 0.3.1 on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate vikos 0.3.1
[INFO] finished tweaking crates.io crate vikos 0.3.1
[INFO] tweaked toml for crates.io crate vikos 0.3.1 written to work/builds/worker-0/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 104ae7257174b1021e72d2f7bd65c6d3654a560d870e4236f294cf6355477fc9
[INFO] running `"docker" "start" "-a" "104ae7257174b1021e72d2f7bd65c6d3654a560d870e4236f294cf6355477fc9"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking memchr v2.2.1
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking num-complex v0.2.3
[INFO] [stderr]     Checking num-bigint v0.2.3
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking num-rational v0.2.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking vikos v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/cost.rs:117:40
[INFO] [stderr]     |
[INFO] [stderr] 117 |     fn approx_derivate<T: Copy>(cost: &Cost<T>, prediction: f64, truth: T) -> f64 {
[INFO] [stderr]     |                                        ^^^^^^^ help: use `dyn`: `dyn Cost<T>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/cost.rs:129:39
[INFO] [stderr]     |
[INFO] [stderr] 129 |     fn check_derivate<T: Copy>(cost: &Cost<T>, prediction: f64, truth: T) -> f64 {
[INFO] [stderr]     |                                       ^^^^^^^ help: use `dyn`: `dyn Cost<T>`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.17s
[INFO] running `"docker" "inspect" "104ae7257174b1021e72d2f7bd65c6d3654a560d870e4236f294cf6355477fc9"`
[INFO] running `"docker" "rm" "-f" "104ae7257174b1021e72d2f7bd65c6d3654a560d870e4236f294cf6355477fc9"`
[INFO] [stdout] 104ae7257174b1021e72d2f7bd65c6d3654a560d870e4236f294cf6355477fc9