[INFO] crate serde_json 1.0.41 is already in cache
[INFO] checking serde_json-1.0.41 against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] extracting crate serde_json 1.0.41 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate serde_json 1.0.41 on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate serde_json 1.0.41
[INFO] finished tweaking crates.io crate serde_json 1.0.41
[INFO] tweaked toml for crates.io crate serde_json 1.0.41 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "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] 33ebb8cb94bccb8b1273fb9123a98a9b1d224306b83f34e223ec2f3e459b829f
[INFO] running `"docker" "start" "-a" "33ebb8cb94bccb8b1273fb9123a98a9b1d224306b83f34e223ec2f3e459b829f"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling psm v0.1.6
[INFO] [stderr]    Compiling stacker v0.1.6
[INFO] [stderr]    Compiling rustversion v0.1.4
[INFO] [stderr]    Compiling automod v0.1.2
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking serde_bytes v0.11.3
[INFO] [stderr]     Checking serde_stacker v0.1.1
[INFO] [stderr]     Checking serde_json v1.0.41 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/error.rs:339:39
[INFO] [stderr]     |
[INFO] [stderr] 339 |             ErrorCode::Io(ref err) => error::Error::description(err),
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Checking trybuild v1.0.19
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/error.rs:339:39
[INFO] [stderr]     |
[INFO] [stderr] 339 |             ErrorCode::Io(ref err) => error::Error::description(err),
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.84s
[INFO] running `"docker" "inspect" "33ebb8cb94bccb8b1273fb9123a98a9b1d224306b83f34e223ec2f3e459b829f"`
[INFO] running `"docker" "rm" "-f" "33ebb8cb94bccb8b1273fb9123a98a9b1d224306b83f34e223ec2f3e459b829f"`
[INFO] [stdout] 33ebb8cb94bccb8b1273fb9123a98a9b1d224306b83f34e223ec2f3e459b829f