[INFO] fetching crate tidy-tuntap 0.3.1...
[INFO] testing tidy-tuntap-0.3.1 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate tidy-tuntap 0.3.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate tidy-tuntap 0.3.1
[INFO] finished tweaking crates.io crate tidy-tuntap 0.3.1
[INFO] tweaked toml for crates.io crate tidy-tuntap 0.3.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tidy-tuntap 0.3.1 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tidy-tuntap 0.3.1 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-macros v1.8.2
[INFO] [stderr]   Downloaded futures-io v0.3.25
[INFO] [stderr]   Downloaded futures-executor v0.3.25
[INFO] [stderr]   Downloaded futures-sink v0.3.25
[INFO] [stderr]   Downloaded bytes v1.3.0
[INFO] [stderr]   Downloaded futures-core v0.3.25
[INFO] [stderr]   Downloaded futures-channel v0.3.25
[INFO] [stderr]   Downloaded parking_lot_core v0.9.5
[INFO] [stderr]   Downloaded futures-task v0.3.25
[INFO] [stderr]   Downloaded futures v0.3.25
[INFO] [stderr]   Downloaded futures-macro v0.3.25
[INFO] [stderr]   Downloaded bindgen v0.60.1
[INFO] [stderr]   Downloaded futures-util v0.3.25
[INFO] [stderr]   Downloaded libc v0.2.138
[INFO] [stderr]   Downloaded tokio v1.23.0
[INFO] [stderr]   Downloaded etherparse v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e0aaefa5b3e07662a2bd4e854ea9a8704ff6fe3932ec8a27ef9713dc8e02e10
[INFO] running `Command { std: "docker" "start" "-a" "2e0aaefa5b3e07662a2bd4e854ea9a8704ff6fe3932ec8a27ef9713dc8e02e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e0aaefa5b3e07662a2bd4e854ea9a8704ff6fe3932ec8a27ef9713dc8e02e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0aaefa5b3e07662a2bd4e854ea9a8704ff6fe3932ec8a27ef9713dc8e02e10", kill_on_drop: false }`
[INFO] [stdout] 2e0aaefa5b3e07662a2bd4e854ea9a8704ff6fe3932ec8a27ef9713dc8e02e10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ec86ccaf4905508846e5f919284bcca8d05093baee96943bd255cfd63fa475d
[INFO] running `Command { std: "docker" "start" "-a" "3ec86ccaf4905508846e5f919284bcca8d05093baee96943bd255cfd63fa475d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling os_str_bytes v6.4.1
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling bindgen v0.60.1
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling nom v7.1.1
[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 humantime v2.1.0
[INFO] [stderr]    Compiling futures-sink v0.3.25
[INFO] [stderr]    Compiling textwrap v0.16.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling clap_lex v0.2.4
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling clang-sys v1.4.0
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling futures-io v0.3.25
[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" "3ec86ccaf4905508846e5f919284bcca8d05093baee96943bd255cfd63fa475d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ec86ccaf4905508846e5f919284bcca8d05093baee96943bd255cfd63fa475d", kill_on_drop: false }`
[INFO] [stdout] 3ec86ccaf4905508846e5f919284bcca8d05093baee96943bd255cfd63fa475d