[INFO] fetching crate kble-tfsync 0.1.0...
[INFO] testing kble-tfsync-0.1.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate kble-tfsync 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate kble-tfsync 0.1.0
[INFO] finished tweaking crates.io crate kble-tfsync 0.1.0
[INFO] tweaked toml for crates.io crate kble-tfsync 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate kble-tfsync 0.1.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate kble-tfsync 0.1.0 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] [stderr]       Adding kble-socket v0.1.0 (available: v0.4.2)
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-log v0.1.3
[INFO] [stderr]   Downloaded futures-sink v0.3.27
[INFO] [stderr]   Downloaded lock_api v0.4.9
[INFO] [stderr]   Downloaded cpufeatures v0.2.5
[INFO] [stderr]   Downloaded futures-core v0.3.27
[INFO] [stderr]   Downloaded generic-array v0.14.6
[INFO] [stderr]   Downloaded futures-io v0.3.27
[INFO] [stderr]   Downloaded futures-task v0.3.27
[INFO] [stderr]   Downloaded futures-macro v0.3.27
[INFO] [stderr]   Downloaded parking_lot_core v0.9.7
[INFO] [stderr]   Downloaded tracing-attributes v0.1.23
[INFO] [stderr]   Downloaded futures-executor v0.3.27
[INFO] [stderr]   Downloaded anyhow v1.0.70
[INFO] [stderr]   Downloaded futures v0.3.27
[INFO] [stderr]   Downloaded tungstenite v0.18.0
[INFO] [stderr]   Downloaded typenum v1.16.0
[INFO] [stderr]   Downloaded thiserror v1.0.40
[INFO] [stderr]   Downloaded futures-util v0.3.27
[INFO] [stderr]   Downloaded tracing-subscriber v0.3.16
[INFO] [stderr]   Downloaded proc-macro2 v1.0.53
[INFO] [stderr]   Downloaded quote v1.0.26
[INFO] [stderr]   Downloaded futures-channel v0.3.27
[INFO] [stderr]   Downloaded syn v2.0.8
[INFO] [stderr]   Downloaded regex v1.7.2
[INFO] [stderr]   Downloaded digest v0.10.6
[INFO] [stderr]   Downloaded tokio-tungstenite v0.18.0
[INFO] [stderr]   Downloaded thiserror-impl v1.0.40
[INFO] [stderr]   Downloaded kble-socket v0.1.0
[INFO] [stderr]   Downloaded sha1 v0.10.5
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 132fcdc7a5613a17b89772ff2fc4995df420e8be8c6008e9e1275f2588348100
[INFO] running `Command { std: "docker" "start" "-a" "132fcdc7a5613a17b89772ff2fc4995df420e8be8c6008e9e1275f2588348100", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "132fcdc7a5613a17b89772ff2fc4995df420e8be8c6008e9e1275f2588348100", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "132fcdc7a5613a17b89772ff2fc4995df420e8be8c6008e9e1275f2588348100", kill_on_drop: false }`
[INFO] [stdout] 132fcdc7a5613a17b89772ff2fc4995df420e8be8c6008e9e1275f2588348100
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48865c631193b72995f476a755d0b8d8751be03ff8565780272b966e1a71d9ca
[INFO] running `Command { std: "docker" "start" "-a" "48865c631193b72995f476a755d0b8d8751be03ff8565780272b966e1a71d9ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling futures-core v0.3.27
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling futures-task v0.3.27
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling futures-sink v0.3.27
[INFO] [stderr]    Compiling futures-channel v0.3.27
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling futures-util v0.3.27
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling tokio v1.26.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.13
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling futures-io v0.3.27
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.53/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 thiserror v1.0.40
[INFO] [stderr]    Compiling form_urlencoded v1.1.0
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling anyhow v1.0.70
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling regex v1.7.2
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling thread_local v1.1.7
[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" "48865c631193b72995f476a755d0b8d8751be03ff8565780272b966e1a71d9ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48865c631193b72995f476a755d0b8d8751be03ff8565780272b966e1a71d9ca", kill_on_drop: false }`
[INFO] [stdout] 48865c631193b72995f476a755d0b8d8751be03ff8565780272b966e1a71d9ca