[INFO] fetching crate ornament 0.1.0...
[INFO] checking ornament-0.1.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate ornament 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ornament 0.1.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ornament 0.1.0
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate ornament 0.1.0
[INFO] tweaked toml for crates.io crate ornament 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate ornament 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "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] 0c1d97a6afe96ad17ef7c425e8fff424271921e839a7c7131a0e579cecb1f4e0
[INFO] running `"docker" "start" "-a" "0c1d97a6afe96ad17ef7c425e8fff424271921e839a7c7131a0e579cecb1f4e0"`
[INFO] [stderr]     Checking ornament v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `serde_json`
[INFO] [stderr]  --> examples/json.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use serde_json;
[INFO] [stderr]   |     ^^^^^^^^^^ no `serde_json` external crate
[INFO] [stderr] 
[INFO] [stderr] error: cannot find derive macro `Serialize` in this scope
[INFO] [stderr]  --> examples/json.rs:7:35
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
[INFO] [stderr]   |                                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find derive macro `Deserialize` in this scope
[INFO] [stderr]  --> examples/json.rs:7:46
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
[INFO] [stderr]   |                                              ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> examples/json.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> examples/json.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | extern crate serde;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `ornament`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0c1d97a6afe96ad17ef7c425e8fff424271921e839a7c7131a0e579cecb1f4e0"`
[INFO] running `"docker" "rm" "-f" "0c1d97a6afe96ad17ef7c425e8fff424271921e839a7c7131a0e579cecb1f4e0"`
[INFO] [stdout] 0c1d97a6afe96ad17ef7c425e8fff424271921e839a7c7131a0e579cecb1f4e0