[INFO] fetching crate unm_engine_qq 0.4.0...
[INFO] testing unm_engine_qq-0.4.0 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate unm_engine_qq 0.4.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate unm_engine_qq 0.4.0
[INFO] finished tweaking crates.io crate unm_engine_qq 0.4.0
[INFO] tweaked toml for crates.io crate unm_engine_qq 0.4.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate unm_engine_qq 0.4.0 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unm_engine_qq 0.4.0 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-macro v0.3.25
[INFO] [stderr]   Downloaded unm_types v0.4.0
[INFO] [stderr]   Downloaded derive_builder_macro v0.12.0
[INFO] [stderr]   Downloaded tokio-macros v1.8.0
[INFO] [stderr]   Downloaded typed-builder v0.11.0
[INFO] [stderr]   Downloaded darling_macro v0.14.2
[INFO] [stderr]   Downloaded unm_selector v0.4.0
[INFO] [stderr]   Downloaded unm_engine v0.4.0
[INFO] [stderr]   Downloaded async_once v0.2.6
[INFO] [stderr]   Downloaded cached_proc_macro v0.16.0
[INFO] [stderr]   Downloaded derive_builder_core v0.12.0
[INFO] [stderr]   Downloaded cached v0.42.0
[INFO] [stderr]   Downloaded concat-string v1.0.1
[INFO] [stderr]   Downloaded darling_core v0.14.2
[INFO] [stderr]   Downloaded futures-executor v0.3.25
[INFO] [stderr]   Downloaded darling v0.14.2
[INFO] [stderr]   Downloaded unm_request v0.4.0
[INFO] [stderr]   Downloaded async-trait v0.1.62
[INFO] [stderr]   Downloaded derive_builder v0.12.0
[INFO] [stderr]   Downloaded ipnet v2.5.1
[INFO] [stderr]   Downloaded tokio v1.24.2
[INFO] [stderr]   Downloaded openssl-src v111.24.0+1.1.1s
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b0b43cc196f2f49c5d7d74840c38a51bcacc0efea9b290d80786d9d87fe941a
[INFO] running `Command { std: "docker" "start" "-a" "1b0b43cc196f2f49c5d7d74840c38a51bcacc0efea9b290d80786d9d87fe941a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b0b43cc196f2f49c5d7d74840c38a51bcacc0efea9b290d80786d9d87fe941a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b0b43cc196f2f49c5d7d74840c38a51bcacc0efea9b290d80786d9d87fe941a", kill_on_drop: false }`
[INFO] [stdout] 1b0b43cc196f2f49c5d7d74840c38a51bcacc0efea9b290d80786d9d87fe941a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78e100cde2dc1291d74d3096733278cadcbbe0f5996e9e9d611e95002d9aab8b
[INFO] running `Command { std: "docker" "start" "-a" "78e100cde2dc1291d74d3096733278cadcbbe0f5996e9e9d611e95002d9aab8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling bytes v1.3.0
[INFO] [stderr]    Compiling once_cell v1.17.0
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling cc v1.0.76
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling tokio v1.24.2
[INFO] [stderr]    Compiling futures-sink v0.3.25
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling futures-io v0.3.25
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling itoa v1.0.4
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling openssl v0.10.45
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling http v0.2.8
[INFO] [stderr]    Compiling miniz_oxide v0.5.4
[INFO] [stderr]    Compiling brotli-decompressor v2.3.2
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling httpdate v1.0.2
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[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] 
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling tracing v0.1.37
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling async-trait v0.1.62
[INFO] [stderr]    Compiling base64 v0.21.0
[INFO] [stderr]    Compiling ipnet v2.5.1
[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" "78e100cde2dc1291d74d3096733278cadcbbe0f5996e9e9d611e95002d9aab8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78e100cde2dc1291d74d3096733278cadcbbe0f5996e9e9d611e95002d9aab8b", kill_on_drop: false }`
[INFO] [stdout] 78e100cde2dc1291d74d3096733278cadcbbe0f5996e9e9d611e95002d9aab8b