[INFO] fetching crate nightly-async-nats 0.27.1...
[INFO] testing nightly-async-nats-0.27.1 against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065-1
[INFO] extracting crate nightly-async-nats 0.27.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate nightly-async-nats 0.27.1
[INFO] finished tweaking crates.io crate nightly-async-nats 0.27.1
[INFO] tweaked toml for crates.io crate nightly-async-nats 0.27.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nightly-async-nats 0.27.1 on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nightly-async-nats 0.27.1 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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-retry v0.3.0
[INFO] [stderr]   Downloaded nkeys v0.2.0
[INFO] [stderr]   Downloaded serde_repr v0.1.10
[INFO] [stderr]   Downloaded serde_nanos v0.1.2
[INFO] [stderr]   Downloaded parking_lot_core v0.9.6
[INFO] [stderr]   Downloaded base64-url v1.4.13
[INFO] [stderr]   Downloaded spki v0.4.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.50
[INFO] [stderr]   Downloaded base64ct v1.1.1
[INFO] [stderr]   Downloaded pem-rfc7468 v0.2.4
[INFO] [stderr]   Downloaded subslice v0.2.3
[INFO] [stderr]   Downloaded signatory v0.23.2
[INFO] [stderr]   Downloaded pkcs8 v0.7.6
[INFO] [stderr]   Downloaded const-oid v0.6.2
[INFO] [stderr]   Downloaded nuid v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e652bd66855d002e42a0b4efb18f19ca2324c259ccbc60fcb9a45038caf8d7d
[INFO] running `Command { std: "docker" "start" "-a" "8e652bd66855d002e42a0b4efb18f19ca2324c259ccbc60fcb9a45038caf8d7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e652bd66855d002e42a0b4efb18f19ca2324c259ccbc60fcb9a45038caf8d7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e652bd66855d002e42a0b4efb18f19ca2324c259ccbc60fcb9a45038caf8d7d", kill_on_drop: false }`
[INFO] [stdout] 8e652bd66855d002e42a0b4efb18f19ca2324c259ccbc60fcb9a45038caf8d7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2896fca91e8c92a82b1e9147624f1e198ce02d789fd9aa2d8cc66cba189215e
[INFO] running `Command { std: "docker" "start" "-a" "b2896fca91e8c92a82b1e9147624f1e198ce02d789fd9aa2d8cc66cba189215e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling parking_lot_core v0.9.6
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling const-oid v0.6.2
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling futures-task v0.3.26
[INFO] [stderr]    Compiling futures-channel v0.3.26
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling tokio v1.25.0
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling base64ct v1.1.1
[INFO] [stderr]    Compiling futures-sink v0.3.26
[INFO] [stderr]    Compiling signature v1.6.4
[INFO] [stderr]    Compiling futures-util v0.3.26
[INFO] [stderr]    Compiling der v0.4.5
[INFO] [stderr]    Compiling pem-rfc7468 v0.2.4
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling futures-io v0.3.26
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling rustls v0.20.8
[INFO] [stderr]    Compiling ed25519 v1.5.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.22
[INFO] [stderr]    Compiling unicode-bidi v0.3.10
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]    Compiling base64 v0.21.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling ryu v1.0.12
[INFO] [stderr]    Compiling data-encoding v2.3.3
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b2896fca91e8c92a82b1e9147624f1e198ce02d789fd9aa2d8cc66cba189215e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2896fca91e8c92a82b1e9147624f1e198ce02d789fd9aa2d8cc66cba189215e", kill_on_drop: false }`
[INFO] [stdout] b2896fca91e8c92a82b1e9147624f1e198ce02d789fd9aa2d8cc66cba189215e
