[INFO] fetching crate simple_predicates-rs 0.1.0...
[INFO] checking simple_predicates-rs-0.1.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate simple_predicates-rs 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate simple_predicates-rs 0.1.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple_predicates-rs 0.1.0
[INFO] finished tweaking crates.io crate simple_predicates-rs 0.1.0
[INFO] tweaked toml for crates.io crate simple_predicates-rs 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ron v0.6.4
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84cf79849822a784463c5f5d48c863eec611db33f3c478ee23cb1dc32dc81720
[INFO] running `Command { std: "docker" "start" "-a" "84cf79849822a784463c5f5d48c863eec611db33f3c478ee23cb1dc32dc81720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84cf79849822a784463c5f5d48c863eec611db33f3c478ee23cb1dc32dc81720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84cf79849822a784463c5f5d48c863eec611db33f3c478ee23cb1dc32dc81720", kill_on_drop: false }`
[INFO] [stdout] 84cf79849822a784463c5f5d48c863eec611db33f3c478ee23cb1dc32dc81720
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5269e90390baef0e6ca50ade415483be68bdde7702b40fdb806312258b16554b
[INFO] running `Command { std: "docker" "start" "-a" "5269e90390baef0e6ca50ade415483be68bdde7702b40fdb806312258b16554b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking simple_predicates-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking ron v0.6.4
[INFO] [stdout] error[E0277]: the trait bound `Expr<{integer}>: serde::ser::Serialize` is not satisfied
[INFO] [stdout]    --> src/tests.rs:191:33
[INFO] [stdout]     |
[INFO] [stdout] 191 |     let s = ron::ser::to_string(&expr).unwrap();
[INFO] [stdout]     |                                 ^^^^^ the trait `serde::ser::Serialize` is not implemented for `Expr<{integer}>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ron-0.6.4/src/ser/mod.rs:35:8
[INFO] [stdout]     |
[INFO] [stdout] 35  |     T: Serialize,
[INFO] [stdout]     |        --------- required by this bound in `ron::to_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `deserialize` found for enum `Expr` in the current scope
[INFO] [stdout]    --> src/tests.rs:210:21
[INFO] [stdout]     |
[INFO] [stdout] 210 |     let res = Expr::deserialize(&mut d).unwrap();
[INFO] [stdout]     |                     ^^^^^^^^^^^ variant or associated item not found in `Expr<_>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:71:1
[INFO] [stdout]     |
[INFO] [stdout] 71  | pub enum Expr<T> {
[INFO] [stdout]     | ---------------- variant or associated item `deserialize` not found here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `deserialize`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `serde::de::Deserialize`
[INFO] [stdout]             candidate #2: `serde::de::DeserializeSeed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple_predicates-rs` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "5269e90390baef0e6ca50ade415483be68bdde7702b40fdb806312258b16554b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5269e90390baef0e6ca50ade415483be68bdde7702b40fdb806312258b16554b", kill_on_drop: false }`
[INFO] [stdout] 5269e90390baef0e6ca50ade415483be68bdde7702b40fdb806312258b16554b