[INFO] fetching crate midenc-driver 0.9.2...
[INFO] checking midenc-driver-0.9.2 against 65b20a97de33e9e59992793a144aef2950c48c76 for pr-154715
[INFO] extracting crate midenc-driver 0.9.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate midenc-driver 0.9.2
[INFO] finished tweaking crates.io crate midenc-driver 0.9.2
[INFO] tweaked toml for crates.io crate midenc-driver 0.9.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate midenc-driver 0.9.2 on toolchain 65b20a97de33e9e59992793a144aef2950c48c76
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+65b20a97de33e9e59992793a144aef2950c48c76" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate midenc-driver 0.9.2 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" "+65b20a97de33e9e59992793a144aef2950c48c76" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 13171cf81aecd61d86690530ebd18aa3e2b68b8380ece91192eda16476fa87ae
[INFO] running `Command { std: "docker" "start" "13171cf81aecd61d86690530ebd18aa3e2b68b8380ece91192eda16476fa87ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13171cf81aecd61d86690530ebd18aa3e2b68b8380ece91192eda16476fa87ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "13171cf81aecd61d86690530ebd18aa3e2b68b8380ece91192eda16476fa87ae" "/opt/rustwide/cargo-home/bin/cargo" "+65b20a97de33e9e59992793a144aef2950c48c76" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13171cf81aecd61d86690530ebd18aa3e2b68b8380ece91192eda16476fa87ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "13171cf81aecd61d86690530ebd18aa3e2b68b8380ece91192eda16476fa87ae" "/opt/rustwide/cargo-home/bin/cargo" "+65b20a97de33e9e59992793a144aef2950c48c76" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] error[E0404]: expected trait, found trait alias `core::ops::Try`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:68:41
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn from_residual(residual: <Self as core::ops::Try>::Residual) -> Self {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^ not a trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0404]: expected trait, found trait alias `core::ops::Try`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 | impl<T> core::ops::Try for FoldResult<T> {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ not a trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0404]: expected trait, found trait alias `core::ops::Try`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:80:41
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn from_residual(residual: <Self as core::ops::Try>::Residual) -> Self {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^ not a trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0404]: expected trait, found trait alias `core::ops::Try`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | impl<B, C> core::ops::Try for WalkResult<B, C> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ not a trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant named `Output` found for enum `foldable::FoldResult<T>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:83:34
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub enum FoldResult<T = ()> {
[INFO] [stdout]    | --------------------------- variant `Output` not found here
[INFO] [stdout] ...
[INFO] [stdout] 83 |     fn from_output(output: Self::Output) -> Self {
[INFO] [stdout]    |                                  ^^^^^^ variant not found in `foldable::FoldResult<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant named `Residual` found for enum `foldable::FoldResult<T>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:88:53
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub enum FoldResult<T = ()> {
[INFO] [stdout]    | --------------------------- variant `Residual` not found here
[INFO] [stdout] ...
[INFO] [stdout] 88 |     fn branch(self) -> core::ops::ControlFlow<Self::Residual, Self::Output> {
[INFO] [stdout]    |                                                     ^^^^^^^^ variant not found in `foldable::FoldResult<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant named `Output` found for enum `foldable::FoldResult<T>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:88:69
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub enum FoldResult<T = ()> {
[INFO] [stdout]    | --------------------------- variant `Output` not found here
[INFO] [stdout] ...
[INFO] [stdout] 88 |     fn branch(self) -> core::ops::ControlFlow<Self::Residual, Self::Output> {
[INFO] [stdout]    |                                                                     ^^^^^^ variant not found in `foldable::FoldResult<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant named `Output` found for enum `ir::visit::WalkResult<B, C>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:95:34
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum WalkResult<B = Report, C = ()> {
[INFO] [stdout]    | --------------------------------------- variant `Output` not found here
[INFO] [stdout] ...
[INFO] [stdout] 95 |     fn from_output(output: Self::Output) -> Self {
[INFO] [stdout]    |                                  ^^^^^^ variant not found in `ir::visit::WalkResult<B, C>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant named `Residual` found for enum `ir::visit::WalkResult<B, C>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:100:42
[INFO] [stdout]     |
[INFO] [stdout]  23 | pub enum WalkResult<B = Report, C = ()> {
[INFO] [stdout]     | --------------------------------------- variant `Residual` not found here
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn branch(self) -> ControlFlow<Self::Residual, Self::Output> {
[INFO] [stdout]     |                                          ^^^^^^^^ variant not found in `ir::visit::WalkResult<B, C>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant named `Output` found for enum `ir::visit::WalkResult<B, C>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:100:58
[INFO] [stdout]     |
[INFO] [stdout]  23 | pub enum WalkResult<B = Report, C = ()> {
[INFO] [stdout]     | --------------------------------------- variant `Output` not found here
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn branch(self) -> ControlFlow<Self::Residual, Self::Output> {
[INFO] [stdout]     |                                                          ^^^^^^ variant not found in `ir::visit::WalkResult<B, C>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `foldable::FoldResult<T>: core::ops::Branch` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn from_residual(residual: <Self as core::ops::Try>::Residual) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `core::ops::Branch` is not implemented for `foldable::FoldResult<T>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub enum FoldResult<T = ()> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `foldable::FoldResult<T>: core::ops::Branch` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 | impl<T> core::ops::FromResidual for FoldResult<T> {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `core::ops::Branch` is not implemented for `foldable::FoldResult<T>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub enum FoldResult<T = ()> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `foldable::FoldResult<T>: FromResidual<_>` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:67:37
[INFO] [stdout]    |
[INFO] [stdout] 67 | impl<T> core::ops::FromResidual for FoldResult<T> {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `core::ops::Branch` is not implemented for `foldable::FoldResult<T>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub enum FoldResult<T = ()> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: the trait `FromResidual` is conditionally implemented for `foldable::FoldResult<T>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | impl<T> core::ops::FromResidual for FoldResult<T> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied requirement introduced here: `foldable::FoldResult<T>: core::ops::Branch`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `foldable::FoldResult<T>: core::ops::Branch` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:76:20
[INFO] [stdout]    |
[INFO] [stdout] 76 |     type TryType = FoldResult<T>;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `core::ops::Branch` is not implemented for `foldable::FoldResult<T>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/traits/foldable.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub enum FoldResult<T = ()> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `ir::visit::WalkResult<B, C>: core::ops::Branch` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn from_residual(residual: <Self as core::ops::Try>::Residual) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `core::ops::Branch` is not implemented for `ir::visit::WalkResult<B, C>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum WalkResult<B = Report, C = ()> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `ir::visit::WalkResult<B, C>: core::ops::Branch` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 | impl<B, C> core::ops::FromResidual for WalkResult<B, C> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `core::ops::Branch` is not implemented for `ir::visit::WalkResult<B, C>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum WalkResult<B = Report, C = ()> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `ir::visit::WalkResult<B, C>: FromResidual<_>` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:79:40
[INFO] [stdout]    |
[INFO] [stdout] 79 | impl<B, C> core::ops::FromResidual for WalkResult<B, C> {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `core::ops::Branch` is not implemented for `ir::visit::WalkResult<B, C>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum WalkResult<B = Report, C = ()> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: the trait `FromResidual` is conditionally implemented for `ir::visit::WalkResult<B, C>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:79:1
[INFO] [stdout]    |
[INFO] [stdout] 79 | impl<B, C> core::ops::FromResidual for WalkResult<B, C> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied requirement introduced here: `ir::visit::WalkResult<B, C>: core::ops::Branch`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `ir::visit::WalkResult<B, C>: core::ops::Branch` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:88:20
[INFO] [stdout]    |
[INFO] [stdout] 88 |     type TryType = WalkResult<B, C>;
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `core::ops::Branch` is not implemented for `ir::visit::WalkResult<B, C>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/midenc-hir-0.9.2/src/ir/visit.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum WalkResult<B = Report, C = ()> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0404, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `midenc-hir` (lib) due to 18 previous errors
[INFO] running `Command { std: "docker" "inspect" "13171cf81aecd61d86690530ebd18aa3e2b68b8380ece91192eda16476fa87ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13171cf81aecd61d86690530ebd18aa3e2b68b8380ece91192eda16476fa87ae", kill_on_drop: false }`
[INFO] [stdout] 13171cf81aecd61d86690530ebd18aa3e2b68b8380ece91192eda16476fa87ae
