[INFO] updating cached repository https://github.com/Byron/rust-tracer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f16522fbd01fb1361ac4b94746e3d46539a54355
[INFO] checking Byron/rust-tracer against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FByron%2Frust-tracer" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Byron/rust-tracer on toolchain 4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Byron/rust-tracer
[INFO] finished tweaking git repo https://github.com/Byron/rust-tracer
[INFO] tweaked toml for git repo https://github.com/Byron/rust-tracer written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Byron/rust-tracer already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/builds/worker-4/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-4/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" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 374bb553dca8c36004ceaa0b914946fb15e909c33171d27880de0da691e1749f
[INFO] running `"docker" "start" "-a" "374bb553dca8c36004ceaa0b914946fb15e909c33171d27880de0da691e1749f"`
[INFO] [stderr]     Checking rtrace v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/rust/render.rs:262:32
[INFO] [stderr]     |
[INFO] [stderr] 262 |                   writer: &mut RGBABufferWriter,
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RGBABufferWriter`
[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/rust/render.rs:364:23
[INFO] [stderr]     |
[INFO] [stderr] 364 |         let out: &mut io::Write = match *self.out {
[INFO] [stderr]     |                       ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/rust/render.rs:262:32
[INFO] [stderr]     |
[INFO] [stderr] 262 |                   writer: &mut RGBABufferWriter,
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn RGBABufferWriter`
[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/rust/render.rs:364:23
[INFO] [stderr]     |
[INFO] [stderr] 364 |         let out: &mut io::Write = match *self.out {
[INFO] [stderr]     |                       ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.69s
[INFO] running `"docker" "inspect" "374bb553dca8c36004ceaa0b914946fb15e909c33171d27880de0da691e1749f"`
[INFO] running `"docker" "rm" "-f" "374bb553dca8c36004ceaa0b914946fb15e909c33171d27880de0da691e1749f"`
[INFO] [stdout] 374bb553dca8c36004ceaa0b914946fb15e909c33171d27880de0da691e1749f