[INFO] fetching crate connectbox 0.1.1...
[INFO] testing connectbox-0.1.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate connectbox 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate connectbox 0.1.1
[INFO] finished tweaking crates.io crate connectbox 0.1.1
[INFO] tweaked toml for crates.io crate connectbox 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate connectbox 0.1.1 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 connectbox 0.1.1 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sharded-slab v0.1.4
[INFO] [stderr]   Downloaded proc-macro2 v1.0.56
[INFO] [stderr]   Downloaded tokio-macros v2.1.0
[INFO] [stderr]   Downloaded tracing-log v0.1.3
[INFO] [stderr]   Downloaded time-macros v0.2.8
[INFO] [stderr]   Downloaded tracing-error v0.2.0
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.34
[INFO] [stderr]   Downloaded addr2line v0.19.0
[INFO] [stderr]   Downloaded serde_derive v1.0.160
[INFO] [stderr]   Downloaded eyre v0.6.8
[INFO] [stderr]   Downloaded bumpalo v3.12.1
[INFO] [stderr]   Downloaded backtrace v0.3.67
[INFO] [stderr]   Downloaded publicsuffix v2.2.3
[INFO] [stderr]   Downloaded time v0.3.20
[INFO] [stderr]   Downloaded quick-xml v0.28.2
[INFO] [stderr]   Downloaded color-spantrace v0.2.0
[INFO] [stderr]   Downloaded h2 v0.3.18
[INFO] [stderr]   Downloaded tracing-subscriber v0.3.17
[INFO] [stderr]   Downloaded reqwest v0.11.17
[INFO] [stderr]   Downloaded object v0.30.3
[INFO] [stderr]   Downloaded syn v2.0.15
[INFO] [stderr]   Downloaded serde v1.0.160
[INFO] [stderr]   Downloaded cookie_store v0.16.1
[INFO] [stderr]   Downloaded tracing-attributes v0.1.24
[INFO] [stderr]   Downloaded color-eyre v0.6.2
[INFO] [stderr]   Downloaded tokio v1.28.0
[INFO] [stderr]   Downloaded libc v0.2.142
[INFO] [stderr]   Downloaded gimli v0.27.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8494cb80e599f23e12bc36edd046cbc5af150bf53ff4310c8dccbd8aea9178f6
[INFO] running `Command { std: "docker" "start" "-a" "8494cb80e599f23e12bc36edd046cbc5af150bf53ff4310c8dccbd8aea9178f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8494cb80e599f23e12bc36edd046cbc5af150bf53ff4310c8dccbd8aea9178f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8494cb80e599f23e12bc36edd046cbc5af150bf53ff4310c8dccbd8aea9178f6", kill_on_drop: false }`
[INFO] [stdout] 8494cb80e599f23e12bc36edd046cbc5af150bf53ff4310c8dccbd8aea9178f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3c279c49dfc6df185e3b2ee0760424e4b7e37fed3d5c588141b6e58fbbd6bbb7
[INFO] running `Command { std: "docker" "start" "-a" "3c279c49dfc6df185e3b2ee0760424e4b7e37fed3d5c588141b6e58fbbd6bbb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling tokio v1.28.0
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling unicode-bidi v0.3.13
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]    Compiling cookie v0.16.2
[INFO] [stderr]    Compiling form_urlencoded v1.1.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling time-macros v0.2.8
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-sink v0.3.28
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling psl-types v2.0.11
[INFO] [stderr]    Compiling try-lock v0.2.4
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/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 httpdate v1.0.2
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling tower-service v0.3.2
[INFO] [stderr]    Compiling http v0.2.9
[INFO] [stderr]    Compiling encoding_rs v0.8.32
[INFO] [stderr]    Compiling ipnet v2.7.2
[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" "3c279c49dfc6df185e3b2ee0760424e4b7e37fed3d5c588141b6e58fbbd6bbb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c279c49dfc6df185e3b2ee0760424e4b7e37fed3d5c588141b6e58fbbd6bbb7", kill_on_drop: false }`
[INFO] [stdout] 3c279c49dfc6df185e3b2ee0760424e4b7e37fed3d5c588141b6e58fbbd6bbb7