[INFO] fetching crate user_trait 0.1.1...
[INFO] checking user_trait-0.1.1 against try#94382f34384023f3d2062a34ccf0bb6b4d44a75a for mutual-coercion
[INFO] extracting crate user_trait 0.1.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate user_trait 0.1.1
[INFO] finished tweaking crates.io crate user_trait 0.1.1
[INFO] tweaked toml for crates.io crate user_trait 0.1.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate user_trait 0.1.1 on toolchain 94382f34384023f3d2062a34ccf0bb6b4d44a75a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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_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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16117a204dffb205b8fee6231f168d73d0a8f9cd7c6ecf9619b96669a6ce3a3c
[INFO] running `Command { std: "docker" "start" "-a" "16117a204dffb205b8fee6231f168d73d0a8f9cd7c6ecf9619b96669a6ce3a3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16117a204dffb205b8fee6231f168d73d0a8f9cd7c6ecf9619b96669a6ce3a3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16117a204dffb205b8fee6231f168d73d0a8f9cd7c6ecf9619b96669a6ce3a3c", kill_on_drop: false }`
[INFO] [stdout] 16117a204dffb205b8fee6231f168d73d0a8f9cd7c6ecf9619b96669a6ce3a3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9de2464256e3a00cb4ccec63b393f7745a6bf674ca56145d18e395126180352
[INFO] running `Command { std: "docker" "start" "-a" "e9de2464256e3a00cb4ccec63b393f7745a6bf674ca56145d18e395126180352", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]    Compiling erased-serde v0.4.9
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling typetag v0.2.21
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking inventory v0.3.21
[INFO] [stderr]     Checking dyn-clone v1.0.20
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling typetag-impl v0.2.21
[INFO] [stderr]     Checking user_trait v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `UserTrait + Send + Sync`, found trait `UserTrait`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn UserTrait + Send + Sync>` to `Box<dyn UserTrait>`
[INFO] [stdout]    = note: expected struct `Box<dyn UserTrait>`
[INFO] [stdout]               found struct `Box<dyn UserTrait + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `UserTrait + Send + Sync`, found trait `UserTrait + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn UserTrait + Send + Sync>` to `Box<dyn UserTrait + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn UserTrait + Send>`
[INFO] [stdout]               found struct `Box<dyn UserTrait + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `UserTrait + Send + Sync`, found trait `UserTrait + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn UserTrait + Send + Sync>` to `Box<dyn UserTrait + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn UserTrait + Sync>`
[INFO] [stdout]               found struct `Box<dyn UserTrait + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `user_trait` (lib) due to 3 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `UserTrait + Send + Sync`, found trait `UserTrait`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn UserTrait + Send + Sync>` to `Box<dyn UserTrait>`
[INFO] [stdout]    = note: expected struct `Box<dyn UserTrait>`
[INFO] [stdout]               found struct `Box<dyn UserTrait + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `UserTrait + Send + Sync`, found trait `UserTrait + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn UserTrait + Send + Sync>` to `Box<dyn UserTrait + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn UserTrait + Send>`
[INFO] [stdout]               found struct `Box<dyn UserTrait + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `UserTrait + Send + Sync`, found trait `UserTrait + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn UserTrait + Send + Sync>` to `Box<dyn UserTrait + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn UserTrait + Sync>`
[INFO] [stdout]               found struct `Box<dyn UserTrait + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `user_trait` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "e9de2464256e3a00cb4ccec63b393f7745a6bf674ca56145d18e395126180352", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9de2464256e3a00cb4ccec63b393f7745a6bf674ca56145d18e395126180352", kill_on_drop: false }`
[INFO] [stdout] e9de2464256e3a00cb4ccec63b393f7745a6bf674ca56145d18e395126180352
