[INFO] fetching crate magicpak 1.4.0...
[INFO] testing magicpak-1.4.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate magicpak 1.4.0 into /workspace/builds/worker-3-tc1/source
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate magicpak 1.4.0
[INFO] finished tweaking crates.io crate magicpak 1.4.0
[INFO] tweaked toml for crates.io crate magicpak 1.4.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate magicpak 1.4.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate magicpak 1.4.0 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded predicates-core v1.0.1
[INFO] [stderr]   Downloaded predicates v2.1.4
[INFO] [stderr]   Downloaded crt0stack v0.1.0
[INFO] [stderr]   Downloaded predicates-tree v1.0.1
[INFO] [stderr]   Downloaded assert_fs v1.0.10
[INFO] [stderr]   Downloaded assert_cmd v2.0.7
[INFO] [stderr]   Downloaded ignore v0.4.17
[INFO] [stderr]   Downloaded nix v0.26.1
[INFO] [stderr]   Downloaded goblin v0.6.0
[INFO] [stderr]   Downloaded rustix v0.36.4
[INFO] [stderr]   Downloaded linux-raw-sys v0.1.3
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8eb652ab83f0ef577a8aabb78e66561c607cc451e456ce9e6f2d4d097e8e2cbd
[INFO] running `Command { std: "docker" "start" "-a" "8eb652ab83f0ef577a8aabb78e66561c607cc451e456ce9e6f2d4d097e8e2cbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8eb652ab83f0ef577a8aabb78e66561c607cc451e456ce9e6f2d4d097e8e2cbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8eb652ab83f0ef577a8aabb78e66561c607cc451e456ce9e6f2d4d097e8e2cbd", kill_on_drop: false }`
[INFO] [stdout] 8eb652ab83f0ef577a8aabb78e66561c607cc451e456ce9e6f2d4d097e8e2cbd
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dfc678a6b489461f26a875fbc04b953be68dbf82c6a33648ce0b80e9192b773
[INFO] running `Command { std: "docker" "start" "-a" "8dfc678a6b489461f26a875fbc04b953be68dbf82c6a33648ce0b80e9192b773", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling rustix v0.36.4
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling linux-raw-sys v0.1.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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 thread_local v1.1.4
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling clap_lex v0.3.0
[INFO] [stderr]    Compiling tracing-log v0.1.3
[INFO] [stderr]    Compiling fastrand v1.7.0
[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" "8dfc678a6b489461f26a875fbc04b953be68dbf82c6a33648ce0b80e9192b773", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dfc678a6b489461f26a875fbc04b953be68dbf82c6a33648ce0b80e9192b773", kill_on_drop: false }`
[INFO] [stdout] 8dfc678a6b489461f26a875fbc04b953be68dbf82c6a33648ce0b80e9192b773