[INFO] crate serde_fs 0.2.0 is already in cache
[INFO] checking serde_fs-0.2.0 against master#339f574809bf8e4166b8de3cdbe7df181d37af3d for pr-71896
[INFO] extracting crate serde_fs 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate serde_fs 0.2.0 on toolchain 339f574809bf8e4166b8de3cdbe7df181d37af3d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate serde_fs 0.2.0
[INFO] finished tweaking crates.io crate serde_fs 0.2.0
[INFO] tweaked toml for crates.io crate serde_fs 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7e5cd8fac668b40788650f621d887f6fe7559782e8c6e6488f30f7ff1a7d181d
[INFO] running `"docker" "start" "-a" "7e5cd8fac668b40788650f621d887f6fe7559782e8c6e6488f30f7ff1a7d181d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]     Checking serde_bytes v0.10.5
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling derive-error v0.0.4
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking serde_fs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/de.rs:323:14
[INFO] [stderr]     |
[INFO] [stderr] 323 |     dir: Box<Iterator<Item = Result<String, io::Error>>>,
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String, io::Error>>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/de.rs:323:14
[INFO] [stderr]     |
[INFO] [stderr] 323 |     dir: Box<Iterator<Item = Result<String, io::Error>>>,
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String, io::Error>>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.81s
[INFO] running `"docker" "inspect" "7e5cd8fac668b40788650f621d887f6fe7559782e8c6e6488f30f7ff1a7d181d"`
[INFO] running `"docker" "rm" "-f" "7e5cd8fac668b40788650f621d887f6fe7559782e8c6e6488f30f7ff1a7d181d"`
[INFO] [stdout] 7e5cd8fac668b40788650f621d887f6fe7559782e8c6e6488f30f7ff1a7d181d