[INFO] fetching crate image-builder 1.0.2...
[INFO] checking image-builder-1.0.2 against try#31561a63598a0f21fc74c024747ef1310fdd2eb2 for pr-133536
[INFO] extracting crate image-builder 1.0.2 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate image-builder 1.0.2 on toolchain 31561a63598a0f21fc74c024747ef1310fdd2eb2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate image-builder 1.0.2
[INFO] finished tweaking crates.io crate image-builder 1.0.2
[INFO] tweaked toml for crates.io crate image-builder 1.0.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate image-builder 1.0.2 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" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b2073c42bf5631f1c2ddf8334628bff3290bec427895898fd38df8e30cce1bd
[INFO] running `Command { std: "docker" "start" "-a" "3b2073c42bf5631f1c2ddf8334628bff3290bec427895898fd38df8e30cce1bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b2073c42bf5631f1c2ddf8334628bff3290bec427895898fd38df8e30cce1bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b2073c42bf5631f1c2ddf8334628bff3290bec427895898fd38df8e30cce1bd", kill_on_drop: false }`
[INFO] [stdout] 3b2073c42bf5631f1c2ddf8334628bff3290bec427895898fd38df8e30cce1bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9745ce48b41bb36687255c76aa14b9cc17df87b1e3f6514ef5557c0c9d366728
[INFO] running `Command { std: "docker" "start" "-a" "9745ce48b41bb36687255c76aa14b9cc17df87b1e3f6514ef5557c0c9d366728", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking bytemuck v1.12.3
[INFO] [stderr]    Compiling paste v1.0.11
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]     Checking weezl v0.1.7
[INFO] [stderr]     Checking half v2.1.0
[INFO] [stderr]     Checking lebe v0.5.2
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking ttf-parser v0.15.2
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking safe_arch v0.6.0
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.7
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.49/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]     Checking conv v0.3.3
[INFO] [stderr]     Checking flate2 v1.0.25
[INFO] [stderr]     Checking gif v0.11.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[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" "9745ce48b41bb36687255c76aa14b9cc17df87b1e3f6514ef5557c0c9d366728", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9745ce48b41bb36687255c76aa14b9cc17df87b1e3f6514ef5557c0c9d366728", kill_on_drop: false }`
[INFO] [stdout] 9745ce48b41bb36687255c76aa14b9cc17df87b1e3f6514ef5557c0c9d366728
