[INFO] fetching crate try_v2 0.4.2...
[INFO] testing try_v2-0.4.2 against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739-1
[INFO] extracting crate try_v2 0.4.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate try_v2 0.4.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate try_v2 0.4.2
[INFO] tweaked toml for crates.io crate try_v2 0.4.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate try_v2 0.4.2 on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate try_v2 0.4.2 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" "+33835004928d3bf65db4d4712e1330766263b0bd" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed014bb6c63a4fe8cfcf2363a564d72666d7d952651309d512119feb7855be75
[INFO] running `Command { std: "docker" "start" "-a" "ed014bb6c63a4fe8cfcf2363a564d72666d7d952651309d512119feb7855be75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed014bb6c63a4fe8cfcf2363a564d72666d7d952651309d512119feb7855be75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed014bb6c63a4fe8cfcf2363a564d72666d7d952651309d512119feb7855be75", kill_on_drop: false }`
[INFO] [stdout] ed014bb6c63a4fe8cfcf2363a564d72666d7d952651309d512119feb7855be75
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 840d4fc18c5cc558c0675ed2cf7ac13c18cd79bcc09058ff2d9e6fd3f613198e
[INFO] running `Command { std: "docker" "start" "-a" "840d4fc18c5cc558c0675ed2cf7ac13c18cd79bcc09058ff2d9e6fd3f613198e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling try_v2 v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling proc_macro2_diagnostic v0.3.0
[INFO] [stdout] error[E0277]: the trait bound `DiagnosticResult<!>: Residual<T>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc_macro2_diagnostic-0.3.0/src/lib.rs:517:21
[INFO] [stdout]     |
[INFO] [stdout] 517 |     type Residual = DiagnosticResult<!>;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the nightly-only, unstable trait `Residual<T>` is not implemented for `DiagnosticResult<!>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc_macro2_diagnostic-0.3.0/src/lib.rs:153:1
[INFO] [stdout]     |
[INFO] [stdout] 153 | pub struct DiagnosticResult<T> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: the following other types implement trait `Residual<O>`
[INFO] [stdout]    --> /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/result.rs:2205:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Result<Infallible, E>`
[INFO] [stdout]    --> /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/option.rs:2810:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Option<Infallible>`
[INFO] [stdout] note: required by a bound in `std::ops::Try::Residual`
[INFO] [stdout]    --> /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/ops/try_trait.rs:160:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc_macro2_diagnostic` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "840d4fc18c5cc558c0675ed2cf7ac13c18cd79bcc09058ff2d9e6fd3f613198e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "840d4fc18c5cc558c0675ed2cf7ac13c18cd79bcc09058ff2d9e6fd3f613198e", kill_on_drop: false }`
[INFO] [stdout] 840d4fc18c5cc558c0675ed2cf7ac13c18cd79bcc09058ff2d9e6fd3f613198e
