[INFO] fetching crate mqtt-ping 0.3.0...
[INFO] testing mqtt-ping-0.3.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate mqtt-ping 0.3.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate mqtt-ping 0.3.0
[INFO] finished tweaking crates.io crate mqtt-ping 0.3.0
[INFO] tweaked toml for crates.io crate mqtt-ping 0.3.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mqtt-ping 0.3.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mqtt-ping 0.3.0 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mio v0.8.4
[INFO] [stderr]   Downloaded futures-task v0.3.24
[INFO] [stderr]   Downloaded futures-io v0.3.24
[INFO] [stderr]   Downloaded futures-sink v0.3.24
[INFO] [stderr]   Downloaded security-framework-sys v2.6.1
[INFO] [stderr]   Downloaded futures-core v0.3.24
[INFO] [stderr]   Downloaded spin v0.9.4
[INFO] [stderr]   Downloaded pharos v0.5.3
[INFO] [stderr]   Downloaded clap_derive v4.0.13
[INFO] [stderr]   Downloaded anyhow v1.0.65
[INFO] [stderr]   Downloaded rumqttc v0.17.0
[INFO] [stderr]   Downloaded security-framework v2.7.0
[INFO] [stderr]   Downloaded futures-util v0.3.24
[INFO] [stderr]   Downloaded futures-macro v0.3.24
[INFO] [stderr]   Downloaded clap v4.0.17
[INFO] [stderr]   Downloaded semver v1.0.14
[INFO] [stderr]   Downloaded cpufeatures v0.2.5
[INFO] [stderr]   Downloaded syn v1.0.102
[INFO] [stderr]   Downloaded futures-executor v0.3.24
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.1
[INFO] [stderr]   Downloaded rustls v0.20.7
[INFO] [stderr]   Downloaded ws_stream_tungstenite v0.7.0
[INFO] [stderr]   Downloaded webpki v0.22.0
[INFO] [stderr]   Downloaded schannel v0.1.20
[INFO] [stderr]   Downloaded console v0.15.2
[INFO] [stderr]   Downloaded indicatif v0.17.1
[INFO] [stderr]   Downloaded pollster v0.2.5
[INFO] [stderr]   Downloaded rustls-pemfile v0.3.0
[INFO] [stderr]   Downloaded async-tungstenite v0.16.1
[INFO] [stderr]   Downloaded async_io_stream v0.3.3
[INFO] [stderr]   Downloaded futures-channel v0.3.24
[INFO] [stderr]   Downloaded libc v0.2.135
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.36.1
[INFO] [stderr]   Downloaded typenum v1.15.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.36.1
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.36.1
[INFO] [stderr]   Downloaded sct v0.7.0
[INFO] [stderr]   Downloaded once_cell v1.15.0
[INFO] [stderr]   Downloaded windows_i686_gnu v0.36.1
[INFO] [stderr]   Downloaded windows_i686_msvc v0.36.1
[INFO] [stderr]   Downloaded rustls-native-certs v0.6.2
[INFO] [stderr]   Downloaded unicode-bidi v0.3.8
[INFO] [stderr]   Downloaded generic-array v0.14.6
[INFO] [stderr]   Downloaded futures v0.3.24
[INFO] [stderr]   Downloaded tungstenite v0.16.0
[INFO] [stderr]   Downloaded windows-sys v0.36.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68fc71594bbe6833ba247479cc8225ecfb13900399fbbd3f685a2fe2bc7b889d
[INFO] running `Command { std: "docker" "start" "-a" "68fc71594bbe6833ba247479cc8225ecfb13900399fbbd3f685a2fe2bc7b889d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68fc71594bbe6833ba247479cc8225ecfb13900399fbbd3f685a2fe2bc7b889d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68fc71594bbe6833ba247479cc8225ecfb13900399fbbd3f685a2fe2bc7b889d", kill_on_drop: false }`
[INFO] [stdout] 68fc71594bbe6833ba247479cc8225ecfb13900399fbbd3f685a2fe2bc7b889d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29506d053ff6fb4f5e94a7eed0f7ed4f9263f2bc42709872bf33971059b0f86f
[INFO] running `Command { std: "docker" "start" "-a" "29506d053ff6fb4f5e94a7eed0f7ed4f9263f2bc42709872bf33971059b0f86f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling once_cell v1.15.0
[INFO] [stderr]    Compiling futures-sink v0.3.24
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling bytes v1.2.1
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.24
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling rustls v0.20.7
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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 cpufeatures v0.2.5
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling rustls-pemfile v1.0.1
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling form_urlencoded v1.1.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling http v0.2.8
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]    Compiling os_str_bytes v6.3.0
[INFO] [stderr]    Compiling rustls-pemfile v0.3.0
[INFO] [stderr]    Compiling pollster v0.2.5
[INFO] [stderr]    Compiling number_prefix v0.4.0
[INFO] [stderr]    Compiling pharos v0.5.3
[INFO] [stderr]    Compiling async_io_stream v0.3.3
[INFO] [stderr]    Compiling ws_stream_tungstenite v0.7.0
[INFO] [stderr]    Compiling rustls-native-certs v0.6.2
[INFO] [stderr]    Compiling clap_lex v0.3.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling spin v0.9.4
[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" "29506d053ff6fb4f5e94a7eed0f7ed4f9263f2bc42709872bf33971059b0f86f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29506d053ff6fb4f5e94a7eed0f7ed4f9263f2bc42709872bf33971059b0f86f", kill_on_drop: false }`
[INFO] [stdout] 29506d053ff6fb4f5e94a7eed0f7ed4f9263f2bc42709872bf33971059b0f86f