[INFO] fetching crate rust-playground-top-crates 0.1.7...
[INFO] testing rust-playground-top-crates-0.1.7 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate rust-playground-top-crates 0.1.7 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate rust-playground-top-crates 0.1.7
[INFO] finished tweaking crates.io crate rust-playground-top-crates 0.1.7
[INFO] tweaked toml for crates.io crate rust-playground-top-crates 0.1.7 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust-playground-top-crates 0.1.7 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rust-playground-top-crates 0.1.7 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.4
[INFO] [stderr]   Downloaded futures-core v0.3.24
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.33
[INFO] [stderr]   Downloaded serde_ignored v0.1.5
[INFO] [stderr]   Downloaded itoa v1.0.3
[INFO] [stderr]   Downloaded native-tls v0.2.10
[INFO] [stderr]   Downloaded textwrap v0.15.1
[INFO] [stderr]   Downloaded futures-io v0.3.24
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[INFO] [stderr]   Downloaded crossbeam-utils v0.8.12
[INFO] [stderr]   Downloaded commoncrypto v0.2.0
[INFO] [stderr]   Downloaded cargo-util v0.2.1
[INFO] [stderr]   Downloaded anyhow v1.0.65
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[INFO] [stderr]   Downloaded futures-util v0.3.24
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[INFO] [stderr]   Downloaded crates-io v0.34.0
[INFO] [stderr]   Downloaded miniz_oxide v0.5.4
[INFO] [stderr]   Downloaded glob v0.3.0
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[INFO] [stderr]   Downloaded env_logger v0.9.1
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[INFO] [stderr]   Downloaded libc v0.2.134
[INFO] [stderr]   Downloaded tokio v1.21.2
[INFO] [stderr]   Downloaded git2-curl v0.15.0
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[INFO] [stderr]   Downloaded reqwest v0.11.12
[INFO] [stderr]   Downloaded cargo-platform v0.1.2
[INFO] [stderr]   Downloaded os_info v3.5.1
[INFO] [stderr]   Downloaded futures-sink v0.3.24
[INFO] [stderr]   Downloaded serde_json v1.0.85
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[INFO] [stderr]   Downloaded openssl-macros v0.1.0
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[INFO] [stderr]   Downloaded vte_generate_state_changes v0.1.1
[INFO] [stderr]   Downloaded strip-ansi-escapes v0.1.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.46
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[INFO] [stderr]   Downloaded tokio-native-tls v0.3.0
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[INFO] [stderr]   Downloaded libgit2-sys v0.13.4+1.4.2
[INFO] [stderr]   Downloaded cargo v0.65.0
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[INFO] [stderr]   Downloaded rustc-workspace-hack v1.0.0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6dcdc517fc8df03556dfa63692608b36cca579bd169dac468d97bb7613b7da1
[INFO] running `Command { std: "docker" "start" "-a" "f6dcdc517fc8df03556dfa63692608b36cca579bd169dac468d97bb7613b7da1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6dcdc517fc8df03556dfa63692608b36cca579bd169dac468d97bb7613b7da1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6dcdc517fc8df03556dfa63692608b36cca579bd169dac468d97bb7613b7da1", kill_on_drop: false }`
[INFO] [stdout] f6dcdc517fc8df03556dfa63692608b36cca579bd169dac468d97bb7613b7da1
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1147229c2a0c967f8874904759c57c3b5b123ea04358c7c11c1a11545c497288
[INFO] running `Command { std: "docker" "start" "-a" "1147229c2a0c967f8874904759c57c3b5b123ea04358c7c11c1a11545c497288", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]    Compiling once_cell v1.15.0
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling itoa v1.0.3
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling openssl v0.10.42
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.22
[INFO] [stderr]    Compiling form_urlencoded v1.1.0
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]    Compiling tracing-core v0.1.29
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling http v0.2.8
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling curl v0.4.44
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]    Compiling jobserver v0.1.25
[INFO] [stderr]    Compiling socket2 v0.4.7
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.46/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 mio v0.8.4
[INFO] [stderr]    Compiling idna v0.3.0
[INFO] [stderr]    Compiling filetime v0.2.17
[INFO] [stderr]    Compiling tracing v0.1.36
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]    Compiling futures-io v0.3.24
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling try-lock v0.2.3
[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" "1147229c2a0c967f8874904759c57c3b5b123ea04358c7c11c1a11545c497288", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1147229c2a0c967f8874904759c57c3b5b123ea04358c7c11c1a11545c497288", kill_on_drop: false }`
[INFO] [stdout] 1147229c2a0c967f8874904759c57c3b5b123ea04358c7c11c1a11545c497288