[INFO] fetching crate study_blocker 0.2.2...
[INFO] testing study_blocker-0.2.2 against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065-1
[INFO] extracting crate study_blocker 0.2.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate study_blocker 0.2.2
[INFO] finished tweaking crates.io crate study_blocker 0.2.2
[INFO] tweaked toml for crates.io crate study_blocker 0.2.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate study_blocker 0.2.2 on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate study_blocker 0.2.2 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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_enum v0.5.7
[INFO] [stderr]   Downloaded parking_lot_core v0.9.5
[INFO] [stderr]   Downloaded proc-macro-crate v1.2.1
[INFO] [stderr]   Downloaded clipboard-win v4.4.2
[INFO] [stderr]   Downloaded bytemuck_derive v1.3.0
[INFO] [stderr]   Downloaded atomic_refcell v0.1.8
[INFO] [stderr]   Downloaded darling_macro v0.14.2
[INFO] [stderr]   Downloaded ab_glyph_rasterizer v0.1.7
[INFO] [stderr]   Downloaded glutin_egl_sys v0.3.1
[INFO] [stderr]   Downloaded glutin_glx_sys v0.3.0
[INFO] [stderr]   Downloaded glutin_wgl_sys v0.3.0
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.33
[INFO] [stderr]   Downloaded num_enum_derive v0.5.7
[INFO] [stderr]   Downloaded accesskit_macos v0.4.0
[INFO] [stderr]   Downloaded ab_glyph v0.2.18
[INFO] [stderr]   Downloaded accesskit_windows v0.10.2
[INFO] [stderr]   Downloaded darling_core v0.14.2
[INFO] [stderr]   Downloaded glutin v0.30.3
[INFO] [stderr]   Downloaded x11-dl v2.20.1
[INFO] [stderr]   Downloaded ron v0.8.0
[INFO] [stderr]   Downloaded toml v0.5.10
[INFO] [stderr]   Downloaded ttf-parser v0.17.1
[INFO] [stderr]   Downloaded owned_ttf_parser v0.17.1
[INFO] [stderr]   Downloaded nom v7.1.1
[INFO] [stderr]   Downloaded webbrowser v0.8.2
[INFO] [stderr]   Downloaded ahash v0.8.2
[INFO] [stderr]   Downloaded accesskit_consumer v0.11.0
[INFO] [stderr]   Downloaded darling v0.14.2
[INFO] [stderr]   Downloaded bytemuck v1.12.3
[INFO] [stderr]   Downloaded memmap2 v0.5.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5660ee22fc4ca28ed2333bd2301797713f6c13db6b129c1cc7184686b11322f9
[INFO] running `Command { std: "docker" "start" "-a" "5660ee22fc4ca28ed2333bd2301797713f6c13db6b129c1cc7184686b11322f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5660ee22fc4ca28ed2333bd2301797713f6c13db6b129c1cc7184686b11322f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5660ee22fc4ca28ed2333bd2301797713f6c13db6b129c1cc7184686b11322f9", kill_on_drop: false }`
[INFO] [stdout] 5660ee22fc4ca28ed2333bd2301797713f6c13db6b129c1cc7184686b11322f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd995e734059d230ad0660cadb28b64d2b1c9126df967e7a701ff0ad08326cbf
[INFO] running `Command { std: "docker" "start" "-a" "fd995e734059d230ad0660cadb28b64d2b1c9126df967e7a701ff0ad08326cbf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]    Compiling dlib v0.5.0
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling ahash v0.8.2
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling ttf-parser v0.17.1
[INFO] [stderr]    Compiling foreign-types-shared v0.3.1
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] 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 tinyvec v1.6.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling ab_glyph_rasterizer v0.1.7
[INFO] [stderr]    Compiling raw-window-handle v0.5.0
[INFO] [stderr]    Compiling cmake v0.1.49
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling nom v7.1.1
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[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" "fd995e734059d230ad0660cadb28b64d2b1c9126df967e7a701ff0ad08326cbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd995e734059d230ad0660cadb28b64d2b1c9126df967e7a701ff0ad08326cbf", kill_on_drop: false }`
[INFO] [stdout] fd995e734059d230ad0660cadb28b64d2b1c9126df967e7a701ff0ad08326cbf
