[INFO] fetching crate thread_safely 0.1.1...
[INFO] testing thread_safely-0.1.1 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate thread_safely 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate thread_safely 0.1.1
[INFO] finished tweaking crates.io crate thread_safely 0.1.1
[INFO] tweaked toml for crates.io crate thread_safely 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate thread_safely 0.1.1 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate thread_safely 0.1.1 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded build_safely v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 03477242f239ae20c9782a1f60c40f428e603ba0479b684d2dfa6b2ed9eda462
[INFO] running `Command { std: "docker" "start" "03477242f239ae20c9782a1f60c40f428e603ba0479b684d2dfa6b2ed9eda462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03477242f239ae20c9782a1f60c40f428e603ba0479b684d2dfa6b2ed9eda462", 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" "03477242f239ae20c9782a1f60c40f428e603ba0479b684d2dfa6b2ed9eda462" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03477242f239ae20c9782a1f60c40f428e603ba0479b684d2dfa6b2ed9eda462", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "03477242f239ae20c9782a1f60c40f428e603ba0479b684d2dfa6b2ed9eda462" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling crossbeam-utils v0.8.23
[INFO] [stderr]    Compiling crossbeam-channel v0.5.17
[INFO] [stderr]    Compiling strum_macros v0.28.0
[INFO] [stderr]    Compiling strum v0.28.0
[INFO] [stderr]    Compiling build_safely v0.6.1
[INFO] [stderr]    Compiling thread_safely v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:130:24
[INFO] [stdout]     |
[INFO] [stdout] 130 |     ops::{ControlFlow, FromResidual, Residual, Try},
[INFO] [stdout]     |                        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2_residual`
[INFO] [stdout]    --> src/lib.rs:130:38
[INFO] [stdout]     |
[INFO] [stdout] 130 |     ops::{ControlFlow, FromResidual, Residual, Try},
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #91285 <https://github.com/rust-lang/rust/issues/91285> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:130:48
[INFO] [stdout]     |
[INFO] [stdout] 130 |     ops::{ControlFlow, FromResidual, Residual, Try},
[INFO] [stdout]     |                                                ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:248:5
[INFO] [stdout]     |
[INFO] [stdout] 248 |     type Output = Self;
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 250 |     type Residual = Self;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:253:5
[INFO] [stdout]     |
[INFO] [stdout] 253 |     fn from_output(output: Self::Output) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:258:5
[INFO] [stdout]     |
[INFO] [stdout] 258 |     fn branch(self) -> ControlFlow<Self::Residual, Self::Output> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 | impl<R> Try for Context<R> {
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:271:5
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn from_residual(residual: Self) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:269:9
[INFO] [stdout]     |
[INFO] [stdout] 269 | impl<R> FromResidual for Context<R> {
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:278:5
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn from_residual(residual: Context<R>) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:276:33
[INFO] [stdout]     |
[INFO] [stdout] 276 | impl<R, T, E: From<Context<R>>> FromResidual<Context<R>> for Result<T, E> {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:295:5
[INFO] [stdout]     |
[INFO] [stdout] 295 |     fn from_residual(_residual: Context<R>) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:293:12
[INFO] [stdout]     |
[INFO] [stdout] 293 | impl<R, T> FromResidual<Context<R>> for Option<T> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:302:5
[INFO] [stdout]     |
[INFO] [stdout] 302 |     fn from_residual(_residual: Context<R>) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:300:24
[INFO] [stdout]     |
[INFO] [stdout] 300 | impl<R, B: Default, C> FromResidual<Context<R>> for ControlFlow<B, C> {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2_residual`
[INFO] [stdout]    --> src/lib.rs:308:5
[INFO] [stdout]     |
[INFO] [stdout] 308 |     type TryType = Context<R>;
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #91285 <https://github.com/rust-lang/rust/issues/91285> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2_residual`
[INFO] [stdout]    --> src/lib.rs:307:9
[INFO] [stdout]     |
[INFO] [stdout] 307 | impl<R> Residual<Context<R>> for Context<R> {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #91285 <https://github.com/rust-lang/rust/issues/91285> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:253:28
[INFO] [stdout]     |
[INFO] [stdout] 253 |     fn from_output(output: Self::Output) -> Self {
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:258:36
[INFO] [stdout]     |
[INFO] [stdout] 258 |     fn branch(self) -> ControlFlow<Self::Residual, Self::Output> {
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]    --> src/lib.rs:258:52
[INFO] [stdout]     |
[INFO] [stdout] 258 |     fn branch(self) -> ControlFlow<Self::Residual, Self::Output> {
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thread_safely` (lib) due to 21 previous errors
[INFO] running `Command { std: "docker" "inspect" "03477242f239ae20c9782a1f60c40f428e603ba0479b684d2dfa6b2ed9eda462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03477242f239ae20c9782a1f60c40f428e603ba0479b684d2dfa6b2ed9eda462", kill_on_drop: false }`
[INFO] [stdout] 03477242f239ae20c9782a1f60c40f428e603ba0479b684d2dfa6b2ed9eda462
