[INFO] updating cached repository https://github.com/ahouts/rwc
[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] f8d8d1e5f7463d8e1ac672b3d3cd4bb248c8b4c4
[INFO] checking ahouts/rwc against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Frwc" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ahouts/rwc on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ahouts/rwc
[INFO] finished tweaking git repo https://github.com/ahouts/rwc
[INFO] tweaked toml for git repo https://github.com/ahouts/rwc written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ahouts/rwc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/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" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a138204a035790027eaeec53b67a8c2cb9eb31a09219442e74330e9da6e85e62
[INFO] running `"docker" "start" "-a" "a138204a035790027eaeec53b67a8c2cb9eb31a09219442e74330e9da6e85e62"`
[INFO] [stderr]     Checking rwc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/counts.rs:25:42
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn display<'a>(&self, w: &'a mut Write, filename: &str, opt: &Options) -> io::Result<()> {
[INFO] [stderr]    |                                          ^^^^^ help: use `dyn`: `dyn Write`
[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/reader.rs:12:53
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn get_buff_reader<'a>(&'a mut self) -> Box<BufRead + 'a> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn BufRead + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/counts.rs:25:42
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn display<'a>(&self, w: &'a mut Write, filename: &str, opt: &Options) -> io::Result<()> {
[INFO] [stderr]    |                                          ^^^^^ help: use `dyn`: `dyn Write`
[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/reader.rs:12:53
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn get_buff_reader<'a>(&'a mut self) -> Box<BufRead + 'a> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn BufRead + 'a`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.94s
[INFO] running `"docker" "inspect" "a138204a035790027eaeec53b67a8c2cb9eb31a09219442e74330e9da6e85e62"`
[INFO] running `"docker" "rm" "-f" "a138204a035790027eaeec53b67a8c2cb9eb31a09219442e74330e9da6e85e62"`
[INFO] [stdout] a138204a035790027eaeec53b67a8c2cb9eb31a09219442e74330e9da6e85e62