[INFO] fetching crate iodeser 0.6.0...
[INFO] testing iodeser-0.6.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate iodeser 0.6.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate iodeser 0.6.0
[INFO] finished tweaking crates.io crate iodeser 0.6.0
[INFO] tweaked toml for crates.io crate iodeser 0.6.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate iodeser 0.6.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate iodeser 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded io_deser v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6215f73167e54844562d090eb77c76d73351197afba1957faf5f9c4f55c1e1f
[INFO] running `Command { std: "docker" "start" "-a" "f6215f73167e54844562d090eb77c76d73351197afba1957faf5f9c4f55c1e1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6215f73167e54844562d090eb77c76d73351197afba1957faf5f9c4f55c1e1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6215f73167e54844562d090eb77c76d73351197afba1957faf5f9c4f55c1e1f", kill_on_drop: false }`
[INFO] [stdout] f6215f73167e54844562d090eb77c76d73351197afba1957faf5f9c4f55c1e1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fbd28c5f60d4be5dced0ed0c309a9edcac85e38ed97395792f3d0b68b049596
[INFO] running `Command { std: "docker" "start" "-a" "8fbd28c5f60d4be5dced0ed0c309a9edcac85e38ed97395792f3d0b68b049596", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling array-init v2.1.0
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling io_deser v0.6.0
[INFO] [stderr]    Compiling iodeser v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.34s
[INFO] running `Command { std: "docker" "inspect" "8fbd28c5f60d4be5dced0ed0c309a9edcac85e38ed97395792f3d0b68b049596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fbd28c5f60d4be5dced0ed0c309a9edcac85e38ed97395792f3d0b68b049596", kill_on_drop: false }`
[INFO] [stdout] 8fbd28c5f60d4be5dced0ed0c309a9edcac85e38ed97395792f3d0b68b049596
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0444de33843ff108d40a13bae5d0d86bcf1b8f254f23f94257e623fb8127e70b
[INFO] running `Command { std: "docker" "start" "-a" "0444de33843ff108d40a13bae5d0d86bcf1b8f254f23f94257e623fb8127e70b", kill_on_drop: false }`
[INFO] [stderr]    Compiling iodeser v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `iodeser::chrono`
[INFO] [stdout]    --> examples/12_chrono.rs:11:14
[INFO] [stdout]     |
[INFO] [stdout]  11 | use iodeser::chrono::{NaiveDate, Utc, DateTime}; // this line would create an error without "chrono" feature on,
[INFO] [stdout]     |              ^^^^^^ could not find `chrono` in `iodeser`
[INFO] [stdout]     |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]    --> /opt/rustwide/workdir/src/lib.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 101 | #[cfg(feature = "chrono")]
[INFO] [stdout]     |       ------------------ the item is gated behind the `chrono` feature
[INFO] [stdout] 102 | pub use chrono;
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `iodeser` (example "12_chrono") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `home_page` is never read
[INFO] [stdout]   --> examples/9_attributes.rs:28:22
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct HttpRequest<T: IoDeSer>{
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] 27 |     #[io_allow] #[io_order(2)] route_id:u32,
[INFO] [stdout] 28 |     #[io_ignore] pub home_page: String, // adding io_name or io_order attribute here would cause error
[INFO] [stdout]    |                      ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `home_page` is never read
[INFO] [stdout]   --> examples/9_attributes.rs:36:22
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct HttpRequestUnchanged<T: IoDeSer>{
[INFO] [stdout]    |        -------------------- field in this struct
[INFO] [stdout] 35 |     #[io_allow] route_id:u32,
[INFO] [stdout] 36 |     #[io_ignore] pub home_page: String,
[INFO] [stdout]    |                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Test2` is never constructed
[INFO] [stdout]   --> tests/tuple_structs.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     struct Test2{
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0444de33843ff108d40a13bae5d0d86bcf1b8f254f23f94257e623fb8127e70b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0444de33843ff108d40a13bae5d0d86bcf1b8f254f23f94257e623fb8127e70b", kill_on_drop: false }`
[INFO] [stdout] 0444de33843ff108d40a13bae5d0d86bcf1b8f254f23f94257e623fb8127e70b