[INFO] crate rust-reduce 0.1.0 is already in cache
[INFO] checking rust-reduce-0.1.0 against try#bcff76bad586cfb6874f179a4b66448e6b8a832c for pr-66919
[INFO] extracting crate rust-reduce 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rust-reduce 0.1.0 on toolchain bcff76bad586cfb6874f179a4b66448e6b8a832c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bcff76bad586cfb6874f179a4b66448e6b8a832c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rust-reduce 0.1.0
[INFO] finished tweaking crates.io crate rust-reduce 0.1.0
[INFO] tweaked toml for crates.io crate rust-reduce 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bcff76bad586cfb6874f179a4b66448e6b8a832c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bcff76bad586cfb6874f179a4b66448e6b8a832c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+bcff76bad586cfb6874f179a4b66448e6b8a832c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 940813f5734046a52b030974fb4241178fbd21a9776752ed34623f2f953e339a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "940813f5734046a52b030974fb4241178fbd21a9776752ed34623f2f953e339a"`
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]     Checking syn-inline-mod v0.2.0
[INFO] [stderr]     Checking rust-reduce v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output.rs:25:43
[INFO] [stderr]    |
[INFO] [stderr] 25 |     constructor: fn(PathBuf, bool) -> Box<OutputType>,
[INFO] [stderr]    |                                           ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[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/output.rs:26:23
[INFO] [stderr]    |
[INFO] [stderr] 26 |     inner: Option<Box<OutputType>>,
[INFO] [stderr]    |                       ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output.rs:49:53
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn new(path: PathBuf, need_backup: bool) -> Box<OutputType> where Self: Sized;
[INFO] [stderr]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output.rs:59:53
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn new(file: PathBuf, need_backup: bool) -> Box<OutputType> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output.rs:94:53
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn new(file: PathBuf, need_backup: bool) -> Box<OutputType> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/output.rs:160:56
[INFO] [stderr]     |
[INFO] [stderr] 160 |                     Box::new(std::io::stdout()) as Box<Write>
[INFO] [stderr]     |                                                        ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output.rs:25:43
[INFO] [stderr]    |
[INFO] [stderr] 25 |     constructor: fn(PathBuf, bool) -> Box<OutputType>,
[INFO] [stderr]    |                                           ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[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/output.rs:26:23
[INFO] [stderr]    |
[INFO] [stderr] 26 |     inner: Option<Box<OutputType>>,
[INFO] [stderr]    |                       ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output.rs:49:53
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn new(path: PathBuf, need_backup: bool) -> Box<OutputType> where Self: Sized;
[INFO] [stderr]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output.rs:59:53
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn new(file: PathBuf, need_backup: bool) -> Box<OutputType> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output.rs:94:53
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn new(file: PathBuf, need_backup: bool) -> Box<OutputType> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn OutputType`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/output.rs:160:56
[INFO] [stderr]     |
[INFO] [stderr] 160 |                     Box::new(std::io::stdout()) as Box<Write>
[INFO] [stderr]     |                                                        ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.89s
[INFO] running `"docker" "inspect" "940813f5734046a52b030974fb4241178fbd21a9776752ed34623f2f953e339a"`
[INFO] running `"docker" "rm" "-f" "940813f5734046a52b030974fb4241178fbd21a9776752ed34623f2f953e339a"`
[INFO] [stdout] 940813f5734046a52b030974fb4241178fbd21a9776752ed34623f2f953e339a