[INFO] fetching crate sway-scratchpad 0.2.1...
[INFO] checking sway-scratchpad-0.2.1 against try#38c2997544af84fe301d600d6896397738163002 for pr-154205-1
[INFO] extracting crate sway-scratchpad 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate sway-scratchpad 0.2.1
[INFO] finished tweaking crates.io crate sway-scratchpad 0.2.1
[INFO] tweaked toml for crates.io crate sway-scratchpad 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sway-scratchpad 0.2.1 on toolchain 38c2997544af84fe301d600d6896397738163002
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sway-scratchpad 0.2.1 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" "+38c2997544af84fe301d600d6896397738163002" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0890f7bbe79d913e50d8c1f01d6ccb44cbb2ac10fb7365761dfc1f2b9009b2b5
[INFO] running `Command { std: "docker" "start" "-a" "0890f7bbe79d913e50d8c1f01d6ccb44cbb2ac10fb7365761dfc1f2b9009b2b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0890f7bbe79d913e50d8c1f01d6ccb44cbb2ac10fb7365761dfc1f2b9009b2b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0890f7bbe79d913e50d8c1f01d6ccb44cbb2ac10fb7365761dfc1f2b9009b2b5", kill_on_drop: false }`
[INFO] [stdout] 0890f7bbe79d913e50d8c1f01d6ccb44cbb2ac10fb7365761dfc1f2b9009b2b5
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4fb2b4d31333d34e1ec045b549fba473b14c77a2db2b22d43e7e58e0c142faf
[INFO] running `Command { std: "docker" "start" "-a" "e4fb2b4d31333d34e1ec045b549fba473b14c77a2db2b22d43e7e58e0c142faf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling io-lifetimes v1.0.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking bstr v1.1.0
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stderr]    Compiling polling v2.5.2
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling rustix v0.36.7
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling async-io v1.12.0
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/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 regex-syntax v0.6.28
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking concurrent-queue v2.1.0
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling async-process v1.6.0
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking clap_lex v0.3.1
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking itertools v0.8.2
[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" "e4fb2b4d31333d34e1ec045b549fba473b14c77a2db2b22d43e7e58e0c142faf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4fb2b4d31333d34e1ec045b549fba473b14c77a2db2b22d43e7e58e0c142faf", kill_on_drop: false }`
[INFO] [stdout] e4fb2b4d31333d34e1ec045b549fba473b14c77a2db2b22d43e7e58e0c142faf