[INFO] fetching crate fastudp 0.1.6...
[INFO] checking fastudp-0.1.6 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate fastudp 0.1.6 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate fastudp 0.1.6 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fastudp 0.1.6
[INFO] finished tweaking crates.io crate fastudp 0.1.6
[INFO] tweaked toml for crates.io crate fastudp 0.1.6 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate fastudp 0.1.6 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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thread_local v1.1.4
[INFO] [stderr]   Downloaded num_cpus v1.13.1
[INFO] [stderr]   Downloaded unicode-width v0.1.10
[INFO] [stderr]   Downloaded slab v0.4.7
[INFO] [stderr]   Downloaded once_cell v1.15.0
[INFO] [stderr]   Downloaded smolscale v0.3.42
[INFO] [stderr]   Downloaded tabwriter v1.2.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.47
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.83
[INFO] [stderr]   Downloaded futures-io v0.3.25
[INFO] [stderr]   Downloaded parking v2.0.0
[INFO] [stderr]   Downloaded atomic-waker v1.0.0
[INFO] [stderr]   Downloaded waker-fn v1.1.0
[INFO] [stderr]   Downloaded futures-sink v0.3.25
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.83
[INFO] [stderr]   Downloaded parking_lot v0.11.2
[INFO] [stderr]   Downloaded argh_derive v0.1.9
[INFO] [stderr]   Downloaded signal-hook-registry v1.4.0
[INFO] [stderr]   Downloaded dashmap v5.4.0
[INFO] [stderr]   Downloaded addr2line v0.17.0
[INFO] [stderr]   Downloaded env_logger v0.9.1
[INFO] [stderr]   Downloaded aho-corasick v0.7.19
[INFO] [stderr]   Downloaded regex-syntax v0.6.27
[INFO] [stderr]   Downloaded syn v1.0.103
[INFO] [stderr]   Downloaded windows_aarch64_gnullvm v0.42.0
[INFO] [stderr]   Downloaded gimli v0.26.2
[INFO] [stderr]   Downloaded windows_i686_gnu v0.42.0
[INFO] [stderr]   Downloaded windows_i686_msvc v0.42.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.42.0
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.42.0
[INFO] [stderr]   Downloaded windows_x86_64_gnullvm v0.42.0
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.42.0
[INFO] [stderr]   Downloaded libc v0.2.135
[INFO] [stderr]   Downloaded regex v1.6.0
[INFO] [stderr]   Downloaded nix v0.25.0
[INFO] [stderr]   Downloaded object v0.29.0
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.83
[INFO] [stderr]   Downloaded signal-hook v0.3.14
[INFO] [stderr]   Downloaded windows-sys v0.42.0
[INFO] [stderr]   Downloaded smol v1.2.5
[INFO] [stderr]   Downloaded anyhow v1.0.66
[INFO] [stderr]   Downloaded async-channel v1.7.1
[INFO] [stderr]   Downloaded concurrent-queue v1.2.4
[INFO] [stderr]   Downloaded socket2 v0.4.7
[INFO] [stderr]   Downloaded async-task v4.3.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.12
[INFO] [stderr]   Downloaded js-sys v0.3.60
[INFO] [stderr]   Downloaded bumpalo v3.11.1
[INFO] [stderr]   Downloaded futures-intrusive v0.4.0
[INFO] [stderr]   Downloaded cc v1.0.73
[INFO] [stderr]   Downloaded miniz_oxide v0.5.4
[INFO] [stderr]   Downloaded backtrace v0.3.66
[INFO] [stderr]   Downloaded async-executor v1.4.1
[INFO] [stderr]   Downloaded wepoll-ffi v0.1.2
[INFO] [stderr]   Downloaded async-io v1.9.0
[INFO] [stderr]   Downloaded async-oneshot v0.4.2
[INFO] [stderr]   Downloaded rustc-demangle v0.1.21
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.11
[INFO] [stderr]   Downloaded unicode-ident v1.0.5
[INFO] [stderr]   Downloaded parking_lot_core v0.8.5
[INFO] [stderr]   Downloaded argh_shared v0.1.9
[INFO] [stderr]   Downloaded argh v0.1.9
[INFO] [stderr]   Downloaded async-fs v1.6.0
[INFO] [stderr]   Downloaded async-net v1.7.0
[INFO] [stderr]   Downloaded async-process v1.5.0
[INFO] [stderr]   Downloaded async-lock v2.5.0
[INFO] [stderr]   Downloaded blocking v1.2.0
[INFO] [stderr]   Downloaded async-global-executor v2.3.0
[INFO] [stderr]   Downloaded polling v2.3.0
[INFO] [stderr]   Downloaded futures-micro v0.3.1
[INFO] [stderr]   Downloaded cache-padded v1.2.0
[INFO] [stderr]   Downloaded parking_lot_core v0.9.4
[INFO] [stderr]   Downloaded event-listener v2.5.3
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.83
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.83
[INFO] [stderr]   Downloaded spin v0.9.4
[INFO] [stderr]   Downloaded fastrand v1.8.0
[INFO] [stderr]   Downloaded futures-core v0.3.25
[INFO] [stderr]   Downloaded futures-lite v1.12.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7f0ece50daf9bee05e8195e3dd2c248ab78cec50e7631d60e94b297682bfe0b
[INFO] running `Command { std: "docker" "start" "-a" "f7f0ece50daf9bee05e8195e3dd2c248ab78cec50e7631d60e94b297682bfe0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7f0ece50daf9bee05e8195e3dd2c248ab78cec50e7631d60e94b297682bfe0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7f0ece50daf9bee05e8195e3dd2c248ab78cec50e7631d60e94b297682bfe0b", kill_on_drop: false }`
[INFO] [stdout] f7f0ece50daf9bee05e8195e3dd2c248ab78cec50e7631d60e94b297682bfe0b
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80e811a1b6197b120e80ca39ff506e78cf244dab582d76eab178d1e87acb452b
[INFO] running `Command { std: "docker" "start" "-a" "80e811a1b6197b120e80ca39ff506e78cf244dab582d76eab178d1e87acb452b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]     Checking concurrent-queue v1.2.4
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]     Checking async-task v4.3.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]     Checking async-lock v2.5.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]     Checking gimli v0.26.2
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking async-channel v1.7.1
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling polling v2.3.0
[INFO] [stderr]    Compiling async-io v1.9.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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 async-process v1.5.0
[INFO] [stderr]    Compiling async-net v1.7.0
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking object v0.29.0
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "80e811a1b6197b120e80ca39ff506e78cf244dab582d76eab178d1e87acb452b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80e811a1b6197b120e80ca39ff506e78cf244dab582d76eab178d1e87acb452b", kill_on_drop: false }`
[INFO] [stdout] 80e811a1b6197b120e80ca39ff506e78cf244dab582d76eab178d1e87acb452b
[INFO] checking fastudp-0.1.6 against master#09bc67b9158392361780e779d32997f14cc75c39 for opaque-soundness-fix
[INFO] extracting crate fastudp 0.1.6 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate fastudp 0.1.6 on toolchain 09bc67b9158392361780e779d32997f14cc75c39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fastudp 0.1.6
[INFO] finished tweaking crates.io crate fastudp 0.1.6
[INFO] tweaked toml for crates.io crate fastudp 0.1.6 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate fastudp 0.1.6 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" "+09bc67b9158392361780e779d32997f14cc75c39" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02124a022c27cbe4b7c48335c59ff3851ec6c8305c711fdb91bb357df986c03d
[INFO] running `Command { std: "docker" "start" "-a" "02124a022c27cbe4b7c48335c59ff3851ec6c8305c711fdb91bb357df986c03d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02124a022c27cbe4b7c48335c59ff3851ec6c8305c711fdb91bb357df986c03d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02124a022c27cbe4b7c48335c59ff3851ec6c8305c711fdb91bb357df986c03d", kill_on_drop: false }`
[INFO] [stdout] 02124a022c27cbe4b7c48335c59ff3851ec6c8305c711fdb91bb357df986c03d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d290b3e6b509548ac51a5210594f2d05dd5c3ce22f5971550a3b7356cf1e15d
[INFO] running `Command { std: "docker" "start" "-a" "7d290b3e6b509548ac51a5210594f2d05dd5c3ce22f5971550a3b7356cf1e15d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking concurrent-queue v1.2.4
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]     Checking async-task v4.3.0
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking async-lock v2.5.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]     Checking gimli v0.26.2
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]     Checking async-channel v1.7.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling argh_shared v0.1.9
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling polling v2.3.0
[INFO] [stderr]    Compiling async-io v1.9.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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 crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling async-net v1.7.0
[INFO] [stderr]    Compiling async-process v1.5.0
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking object v0.29.0
[INFO] [stdout] error: aborting due to 1 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" "7d290b3e6b509548ac51a5210594f2d05dd5c3ce22f5971550a3b7356cf1e15d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d290b3e6b509548ac51a5210594f2d05dd5c3ce22f5971550a3b7356cf1e15d", kill_on_drop: false }`
[INFO] [stdout] 7d290b3e6b509548ac51a5210594f2d05dd5c3ce22f5971550a3b7356cf1e15d
