[INFO] fetching crate plctag 0.4.1...
[INFO] testing plctag-0.4.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate plctag 0.4.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate plctag 0.4.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate plctag 0.4.1
[INFO] tweaked toml for crates.io crate plctag 0.4.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate plctag 0.4.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate plctag 0.4.1 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 57.39s
[INFO] running `Command { std: "docker" "inspect" "5d3acf11b4c44005b3fc04d3472988b7482691e1375d3d15955d1915428290ca", kill_on_drop: false }`
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[INFO] [stdout] 5d3acf11b4c44005b3fc04d3472988b7482691e1375d3d15955d1915428290ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] error: currently only a single tag attribute is supported
[INFO] [stdout]   --> examples/udt.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 |     #[tag(decode_fn = "my_decode", encode_fn = "my_encode")]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Result`
[INFO] [stdout]  --> examples/udt.rs:7:38
[INFO] [stdout]   |
[INFO] [stdout] 7 | use plctag::{Decode, Encode, RawTag, Result, ValueExt};
[INFO] [stdout]   |                                      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MyUDT: Decode` is not satisfied
[INFO] [stdout]    --> examples/udt.rs:38:32
[INFO] [stdout]     |
[INFO] [stdout]  38 |     let mut value: MyUDT = tag.get_value(offset).unwrap();
[INFO] [stdout]     |                                ^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `Decode` is not implemented for `MyUDT`
[INFO] [stdout]    --> examples/udt.rs:11:1
[INFO] [stdout]     |
[INFO] [stdout]  11 | struct MyUDT {
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     = help: the following other types implement trait `Decode`:
[INFO] [stdout]               Arc<T>
[INFO] [stdout]               Box<T>
[INFO] [stdout]               Cow<'_, T>
[INFO] [stdout]               Option<T>
[INFO] [stdout]               PhantomData<T>
[INFO] [stdout]               Rc<T>
[INFO] [stdout]               bool
[INFO] [stdout]               f32
[INFO] [stdout]             and 9 others
[INFO] [stdout] note: required by a bound in `get_value`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/plctag-core-0.4.1/src/value.rs:290:21
[INFO] [stdout]     |
[INFO] [stdout] 290 |     fn get_value<T: Decode>(&self, byte_offset: u32) -> Result<T>;
[INFO] [stdout]     |                     ^^^^^^ required by this bound in `ValueExt::get_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MyUDT: Encode` is not satisfied
[INFO] [stdout]    --> examples/udt.rs:42:27
[INFO] [stdout]     |
[INFO] [stdout]  42 |     tag.set_value(offset, value).unwrap();
[INFO] [stdout]     |         ---------         ^^^^^ unsatisfied trait bound
[INFO] [stdout]     |         |
[INFO] [stdout]     |         required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `Encode` is not implemented for `MyUDT`
[INFO] [stdout]    --> examples/udt.rs:11:1
[INFO] [stdout]     |
[INFO] [stdout]  11 | struct MyUDT {
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     = help: the following other types implement trait `Encode`:
[INFO] [stdout]               &T
[INFO] [stdout]               &[u8]
[INFO] [stdout]               Arc<T>
[INFO] [stdout]               Box<T>
[INFO] [stdout]               Cow<'_, T>
[INFO] [stdout]               Option<T>
[INFO] [stdout]               PhantomData<T>
[INFO] [stdout]               Rc<T>
[INFO] [stdout]             and 11 others
[INFO] [stdout] note: required by a bound in `set_value`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/plctag-core-0.4.1/src/value.rs:300:21
[INFO] [stdout]     |
[INFO] [stdout] 300 |     fn set_value<T: Encode>(&self, byte_offset: u32, value: T) -> Result<()>;
[INFO] [stdout]     |                     ^^^^^^ required by this bound in `ValueExt::set_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `plctag` (example "udt") due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "deb082054077d74bddf1929a1e9cf55b8234d3088d07b9f11004ae3981583484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "deb082054077d74bddf1929a1e9cf55b8234d3088d07b9f11004ae3981583484", kill_on_drop: false }`
[INFO] [stdout] deb082054077d74bddf1929a1e9cf55b8234d3088d07b9f11004ae3981583484
