[INFO] fetching crate knowledge 0.4.3...
[INFO] checking knowledge-0.4.3 against master#6162f6f12339aa81fe16b8a64644ead497e411b2 for pr-113240
[INFO] extracting crate knowledge 0.4.3 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate knowledge 0.4.3 on toolchain 6162f6f12339aa81fe16b8a64644ead497e411b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate knowledge 0.4.3
[INFO] finished tweaking crates.io crate knowledge 0.4.3
[INFO] tweaked toml for crates.io crate knowledge 0.4.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate knowledge 0.4.3 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" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "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 clap_lex v0.3.3
[INFO] [stderr]   Downloaded malloc_buf v0.0.6
[INFO] [stderr]   Downloaded is-terminal v0.4.5
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.93
[INFO] [stderr]   Downloaded cxx v1.0.93
[INFO] [stderr]   Downloaded iana-time-zone v0.1.54
[INFO] [stderr]   Downloaded cesu8 v1.1.0
[INFO] [stderr]   Downloaded dirs-sys v0.4.0
[INFO] [stderr]   Downloaded futures v0.3.27
[INFO] [stderr]   Downloaded clap v4.1.13
[INFO] [stderr]   Downloaded syn v2.0.10
[INFO] [stderr]   Downloaded cxx-build v1.0.93
[INFO] [stderr]   Downloaded jni v0.21.1
[INFO] [stderr]   Downloaded dirs v5.0.0
[INFO] [stderr]   Downloaded platforms v3.0.2
[INFO] [stderr]   Downloaded futures-io v0.3.27
[INFO] [stderr]   Downloaded filetime v0.2.20
[INFO] [stderr]   Downloaded webbrowser v0.8.8
[INFO] [stderr]   Downloaded windows v0.46.0
[INFO] [stderr]   Downloaded futures-macro v0.3.27
[INFO] [stderr]   Downloaded serde_derive v1.0.158
[INFO] [stderr]   Downloaded futures-executor v0.3.27
[INFO] [stderr]   Downloaded objc v0.2.7
[INFO] [stderr]   Downloaded raw-window-handle v0.5.1
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.93
[INFO] [stderr]   Downloaded clap_derive v4.1.12
[INFO] [stderr]   Downloaded os_str_bytes v6.5.0
[INFO] [stderr]   Downloaded jni-sys v0.3.0
[INFO] [stderr]   Downloaded ndk-context v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25d58899a4e324137900c7556cf9aeb04eef191bed326ccac3b92d4b216115bb
[INFO] running `Command { std: "docker" "start" "-a" "25d58899a4e324137900c7556cf9aeb04eef191bed326ccac3b92d4b216115bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25d58899a4e324137900c7556cf9aeb04eef191bed326ccac3b92d4b216115bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25d58899a4e324137900c7556cf9aeb04eef191bed326ccac3b92d4b216115bb", kill_on_drop: false }`
[INFO] [stdout] 25d58899a4e324137900c7556cf9aeb04eef191bed326ccac3b92d4b216115bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59d6413d5836348c6c8597fe19e9ae155af2e6d2d8d0d4be4a1a6a2f0935bd3a
[INFO] running `Command { std: "docker" "start" "-a" "59d6413d5836348c6c8597fe19e9ae155af2e6d2d8d0d4be4a1a6a2f0935bd3a", 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]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling serde_derive v1.0.158
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.158
[INFO] [stderr]    Compiling futures-core v0.3.27
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]     Checking futures-sink v0.3.27
[INFO] [stderr]    Compiling futures-task v0.3.27
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling openssl-sys v0.9.83
[INFO] [stderr]    Compiling futures-channel v0.3.27
[INFO] [stderr]    Compiling tokio v1.26.0
[INFO] [stderr]    Compiling futures-util v0.3.27
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]     Checking 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-6f17d22bba15001f/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] 
[INFO] [stderr]    Compiling rustix v0.36.11
[INFO] [stderr]    Compiling openssl v0.10.48
[INFO] [stderr]    Compiling unicode-bidi v0.3.13
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "59d6413d5836348c6c8597fe19e9ae155af2e6d2d8d0d4be4a1a6a2f0935bd3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59d6413d5836348c6c8597fe19e9ae155af2e6d2d8d0d4be4a1a6a2f0935bd3a", kill_on_drop: false }`
[INFO] [stdout] 59d6413d5836348c6c8597fe19e9ae155af2e6d2d8d0d4be4a1a6a2f0935bd3a