[INFO] fetching crate velvet-core 0.4.2...
[INFO] checking velvet-core-0.4.2 against try#94382f34384023f3d2062a34ccf0bb6b4d44a75a for mutual-coercion
[INFO] extracting crate velvet-core 0.4.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate velvet-core 0.4.2
[INFO] finished tweaking crates.io crate velvet-core 0.4.2
[INFO] tweaked toml for crates.io crate velvet-core 0.4.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate velvet-core 0.4.2 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 89 packages to latest compatible versions
[INFO] [stderr]       Adding approx v0.4.0 (available: v0.5.1)
[INFO] [stderr]       Adding hdf5 v0.7.1 (available: v0.8.1)
[INFO] [stderr]       Adding hdf5-sys v0.7.1 (available: v0.8.1)
[INFO] [stderr]       Adding nalgebra v0.23.2 (available: v0.34.1)
[INFO] [stderr]       Adding pretty_env_logger v0.4.0 (available: v0.5.0)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] [stderr]       Adding rand_distr v0.3.0 (available: v0.5.1)
[INFO] [stderr]       Adding strum v0.20.0 (available: v0.27.2)
[INFO] [stderr]       Adding strum_macros v0.20.1 (available: v0.27.2)
[INFO] [stderr]       Adding typetag v0.1.8 (available: v0.2.21)
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c8e707882decc2bec5dc80dfc8e69428539029b0b0d24a4597c361d614649bde
[INFO] running `Command { std: "docker" "start" "-a" "c8e707882decc2bec5dc80dfc8e69428539029b0b0d24a4597c361d614649bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8e707882decc2bec5dc80dfc8e69428539029b0b0d24a4597c361d614649bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8e707882decc2bec5dc80dfc8e69428539029b0b0d24a4597c361d614649bde", kill_on_drop: false }`
[INFO] [stdout] c8e707882decc2bec5dc80dfc8e69428539029b0b0d24a4597c361d614649bde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 819a6ec1ba7a645d8607cab4e80df4845af200e58c456b16d49a95202e8f1baf
[INFO] running `Command { std: "docker" "start" "-a" "819a6ec1ba7a645d8607cab4e80df4845af200e58c456b16d49a95202e8f1baf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]     Checking regex-syntax v0.8.8
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling generic-array v0.14.9
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking strum v0.20.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand_distr v0.3.0
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]    Compiling typetag-impl v0.1.8
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling ghost v0.1.20
[INFO] [stderr]     Checking inventory v0.2.3
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking erased-serde v0.3.31
[INFO] [stderr]     Checking simba v0.3.1
[INFO] [stderr]     Checking typetag v0.1.8
[INFO] [stderr]     Checking nalgebra v0.23.2
[INFO] [stderr]     Checking velvet-core v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/integrators.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Integrator + Send + Sync`, found trait `Integrator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Integrator + Send + Sync>` to `Box<dyn Integrator>`
[INFO] [stdout]    = note: expected struct `Box<dyn Integrator>`
[INFO] [stdout]               found struct `Box<dyn Integrator + 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/integrators.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Integrator + Send + Sync`, found trait `Integrator + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Integrator + Send + Sync>` to `Box<dyn Integrator + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn Integrator + Send>`
[INFO] [stdout]               found struct `Box<dyn Integrator + 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/integrators.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Integrator + Send + Sync`, found trait `Integrator + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Integrator + Send + Sync>` to `Box<dyn Integrator + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn Integrator + Sync>`
[INFO] [stdout]               found struct `Box<dyn Integrator + 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/potentials/mod.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Potential + Send + Sync`, found trait `Potential`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Potential + Send + Sync>` to `Box<dyn Potential>`
[INFO] [stdout]    = note: expected struct `Box<dyn Potential>`
[INFO] [stdout]               found struct `Box<dyn Potential + 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/potentials/mod.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Potential + Send + Sync`, found trait `Potential + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Potential + Send + Sync>` to `Box<dyn Potential + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn Potential + Send>`
[INFO] [stdout]               found struct `Box<dyn Potential + 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/potentials/mod.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Potential + Send + Sync`, found trait `Potential + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Potential + Send + Sync>` to `Box<dyn Potential + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn Potential + Sync>`
[INFO] [stdout]               found struct `Box<dyn Potential + 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/propagators.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[typetag::serde(tag = "type")]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Propagator + Send + Sync`, found trait `Propagator`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `?` operator cannot convert from `Box<dyn Propagator + Send + Sync>` to `Box<dyn Propagator>`
[INFO] [stdout]   = note: expected struct `Box<dyn Propagator>`
[INFO] [stdout]              found struct `Box<dyn Propagator + 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/propagators.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[typetag::serde(tag = "type")]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Propagator + Send + Sync`, found trait `Propagator + Send`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `?` operator cannot convert from `Box<dyn Propagator + Send + Sync>` to `Box<dyn Propagator + Send>`
[INFO] [stdout]   = note: expected struct `Box<dyn Propagator + Send>`
[INFO] [stdout]              found struct `Box<dyn Propagator + 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/propagators.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[typetag::serde(tag = "type")]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Propagator + Send + Sync`, found trait `Propagator + Sync`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `?` operator cannot convert from `Box<dyn Propagator + Send + Sync>` to `Box<dyn Propagator + Sync>`
[INFO] [stdout]   = note: expected struct `Box<dyn Propagator + Sync>`
[INFO] [stdout]              found struct `Box<dyn Propagator + 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/integrators.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Integrator + Send + Sync`, found trait `Integrator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Integrator + Send + Sync>` to `Box<dyn Integrator>`
[INFO] [stdout]    = note: expected struct `Box<dyn Integrator>`
[INFO] [stdout]               found struct `Box<dyn Integrator + 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/integrators.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Integrator + Send + Sync`, found trait `Integrator + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Integrator + Send + Sync>` to `Box<dyn Integrator + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn Integrator + Send>`
[INFO] [stdout]               found struct `Box<dyn Integrator + 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/integrators.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Integrator + Send + Sync`, found trait `Integrator + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Integrator + Send + Sync>` to `Box<dyn Integrator + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn Integrator + Sync>`
[INFO] [stdout]               found struct `Box<dyn Integrator + 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/thermostats.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Thermostat + Send + Sync`, found trait `Thermostat`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Thermostat + Send + Sync>` to `Box<dyn Thermostat>`
[INFO] [stdout]    = note: expected struct `Box<dyn Thermostat>`
[INFO] [stdout]               found struct `Box<dyn Thermostat + 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/thermostats.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Thermostat + Send + Sync`, found trait `Thermostat + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Thermostat + Send + Sync>` to `Box<dyn Thermostat + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn Thermostat + Send>`
[INFO] [stdout]               found struct `Box<dyn Thermostat + 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/thermostats.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Thermostat + Send + Sync`, found trait `Thermostat + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Thermostat + Send + Sync>` to `Box<dyn Thermostat + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn Thermostat + Sync>`
[INFO] [stdout]               found struct `Box<dyn Thermostat + 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/potentials/mod.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Potential + Send + Sync`, found trait `Potential`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Potential + Send + Sync>` to `Box<dyn Potential>`
[INFO] [stdout]    = note: expected struct `Box<dyn Potential>`
[INFO] [stdout]               found struct `Box<dyn Potential + 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/potentials/mod.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Potential + Send + Sync`, found trait `Potential + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Potential + Send + Sync>` to `Box<dyn Potential + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn Potential + Send>`
[INFO] [stdout]               found struct `Box<dyn Potential + 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/potentials/mod.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Potential + Send + Sync`, found trait `Potential + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Potential + Send + Sync>` to `Box<dyn Potential + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn Potential + Sync>`
[INFO] [stdout]               found struct `Box<dyn Potential + 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/propagators.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[typetag::serde(tag = "type")]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Propagator + Send + Sync`, found trait `Propagator`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `?` operator cannot convert from `Box<dyn Propagator + Send + Sync>` to `Box<dyn Propagator>`
[INFO] [stdout]   = note: expected struct `Box<dyn Propagator>`
[INFO] [stdout]              found struct `Box<dyn Propagator + 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/propagators.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[typetag::serde(tag = "type")]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Propagator + Send + Sync`, found trait `Propagator + Send`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `?` operator cannot convert from `Box<dyn Propagator + Send + Sync>` to `Box<dyn Propagator + Send>`
[INFO] [stdout]   = note: expected struct `Box<dyn Propagator + Send>`
[INFO] [stdout]              found struct `Box<dyn Propagator + 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/propagators.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[typetag::serde(tag = "type")]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Propagator + Send + Sync`, found trait `Propagator + Sync`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `?` operator cannot convert from `Box<dyn Propagator + Send + Sync>` to `Box<dyn Propagator + Sync>`
[INFO] [stdout]   = note: expected struct `Box<dyn Propagator + Sync>`
[INFO] [stdout]              found struct `Box<dyn Propagator + 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/thermostats.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Thermostat + Send + Sync`, found trait `Thermostat`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Thermostat + Send + Sync>` to `Box<dyn Thermostat>`
[INFO] [stdout]    = note: expected struct `Box<dyn Thermostat>`
[INFO] [stdout]               found struct `Box<dyn Thermostat + 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/thermostats.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Thermostat + Send + Sync`, found trait `Thermostat + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Thermostat + Send + Sync>` to `Box<dyn Thermostat + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn Thermostat + Send>`
[INFO] [stdout]               found struct `Box<dyn Thermostat + 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/thermostats.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[typetag::serde(tag = "type")]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected trait `Thermostat + Send + Sync`, found trait `Thermostat + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn Thermostat + Send + Sync>` to `Box<dyn Thermostat + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn Thermostat + Sync>`
[INFO] [stdout]               found struct `Box<dyn Thermostat + 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 `velvet-core` (lib test) due to 12 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `velvet-core` (lib) due to 12 previous errors
[INFO] running `Command { std: "docker" "inspect" "819a6ec1ba7a645d8607cab4e80df4845af200e58c456b16d49a95202e8f1baf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "819a6ec1ba7a645d8607cab4e80df4845af200e58c456b16d49a95202e8f1baf", kill_on_drop: false }`
[INFO] [stdout] 819a6ec1ba7a645d8607cab4e80df4845af200e58c456b16d49a95202e8f1baf
