[INFO] crate slog-async 2.4.0 is already in cache
[INFO] checking slog-async-2.4.0 against master#3dbade652ed8ebac70f903e01f51cd92c4e4302c for pr-69741
[INFO] extracting crate slog-async 2.4.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate slog-async 2.4.0 on toolchain 3dbade652ed8ebac70f903e01f51cd92c4e4302c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate slog-async 2.4.0
[INFO] finished tweaking crates.io crate slog-async 2.4.0
[INFO] tweaked toml for crates.io crate slog-async 2.4.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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] 690a267b72e5cf6a6f0e63c33b4e2df8b4135c2f4c68d174d7cc9db7c48d34fb
[INFO] running `"docker" "start" "-a" "690a267b72e5cf6a6f0e63c33b4e2df8b4135c2f4c68d174d7cc9db7c48d34fb"`
[INFO] [stderr]     Checking slog-async v2.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> lib.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |     kv: Box<KV + Send>,
[INFO] [stderr]    |             ^^^^^^^^^ help: use `dyn`: `dyn KV + Send`
[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]   --> lib.rs:84:28
[INFO] [stderr]    |
[INFO] [stderr] 84 |     fn finish(self) -> Box<KV + Send> {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn KV + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> lib.rs:187:15
[INFO] [stderr]     |
[INFO] [stderr] 187 |     Fatal(Box<std::error::Error>),
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> lib.rs:370:34
[INFO] [stderr]     |
[INFO] [stderr] 370 |         let _err: Result<(), Box<std::error::Error>> = {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> lib.rs:481:13
[INFO] [stderr]     |
[INFO] [stderr] 481 |     kv: Box<KV + Send>,
[INFO] [stderr]     |             ^^^^^^^^^ help: use `dyn`: `dyn KV + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> lib.rs:491:34
[INFO] [stderr]     |
[INFO] [stderr] 491 |         let _err: Result<(), Box<std::error::Error>> = {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> lib.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |     kv: Box<KV + Send>,
[INFO] [stderr]    |             ^^^^^^^^^ help: use `dyn`: `dyn KV + Send`
[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]   --> lib.rs:84:28
[INFO] [stderr]    |
[INFO] [stderr] 84 |     fn finish(self) -> Box<KV + Send> {
[INFO] [stderr]    |                            ^^^^^^^^^ help: use `dyn`: `dyn KV + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> lib.rs:187:15
[INFO] [stderr]     |
[INFO] [stderr] 187 |     Fatal(Box<std::error::Error>),
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> lib.rs:370:34
[INFO] [stderr]     |
[INFO] [stderr] 370 |         let _err: Result<(), Box<std::error::Error>> = {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> lib.rs:481:13
[INFO] [stderr]     |
[INFO] [stderr] 481 |     kv: Box<KV + Send>,
[INFO] [stderr]     |             ^^^^^^^^^ help: use `dyn`: `dyn KV + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> lib.rs:491:34
[INFO] [stderr]     |
[INFO] [stderr] 491 |         let _err: Result<(), Box<std::error::Error>> = {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> lib.rs:207:59
[INFO] [stderr]     |
[INFO] [stderr] 207 |             io::Error::new(io::ErrorKind::BrokenPipe, err.description()),
[INFO] [stderr]     |                                                           ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> lib.rs:207:59
[INFO] [stderr]     |
[INFO] [stderr] 207 |             io::Error::new(io::ErrorKind::BrokenPipe, err.description()),
[INFO] [stderr]     |                                                           ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "690a267b72e5cf6a6f0e63c33b4e2df8b4135c2f4c68d174d7cc9db7c48d34fb"`
[INFO] running `"docker" "rm" "-f" "690a267b72e5cf6a6f0e63c33b4e2df8b4135c2f4c68d174d7cc9db7c48d34fb"`
[INFO] [stdout] 690a267b72e5cf6a6f0e63c33b4e2df8b4135c2f4c68d174d7cc9db7c48d34fb