[INFO] cloning repository https://github.com/seanstrom/rust-tao-experiment
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/seanstrom/rust-tao-experiment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanstrom%2Frust-tao-experiment", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanstrom%2Frust-tao-experiment'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 329a3ab0f1ff65c97e7b061c418f2bcaefec4603
[INFO] checking seanstrom/rust-tao-experiment against try#db4e1d23234d93b5e96ecc768b35d9090c32cddf for pr-149901
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanstrom%2Frust-tao-experiment" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/seanstrom/rust-tao-experiment
[INFO] finished tweaking git repo https://github.com/seanstrom/rust-tao-experiment
[INFO] tweaked toml for git repo https://github.com/seanstrom/rust-tao-experiment written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/seanstrom/rust-tao-experiment on toolchain db4e1d23234d93b5e96ecc768b35d9090c32cddf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db4e1d23234d93b5e96ecc768b35d9090c32cddf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/seanstrom/rust-tao-experiment 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" "+db4e1d23234d93b5e96ecc768b35d9090c32cddf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows-implement v0.39.0
[INFO] [stderr]   Downloaded windows-tokens v0.39.0
[INFO] [stderr]   Downloaded libappindicator-sys v0.7.3
[INFO] [stderr]   Downloaded gdkx11-sys v0.15.1
[INFO] [stderr]   Downloaded pango-sys v0.15.10
[INFO] [stderr]   Downloaded libappindicator v0.7.1
[INFO] [stderr]   Downloaded uuid v1.2.1
[INFO] [stderr]   Downloaded gdk-pixbuf v0.15.11
[INFO] [stderr]   Downloaded atk-sys v0.15.1
[INFO] [stderr]   Downloaded gobject-sys v0.15.10
[INFO] [stderr]   Downloaded gtk3-macros v0.15.4
[INFO] [stderr]   Downloaded env_logger v0.9.1
[INFO] [stderr]   Downloaded pango v0.15.10
[INFO] [stderr]   Downloaded x11 v2.20.0
[INFO] [stderr]   Downloaded gdk-sys v0.15.1
[INFO] [stderr]   Downloaded pest v2.4.0
[INFO] [stderr]   Downloaded gtk-sys v0.15.3
[INFO] [stderr]   Downloaded gdk v0.15.4
[INFO] [stderr]   Downloaded gio-sys v0.15.10
[INFO] [stderr]   Downloaded glib-sys v0.15.10
[INFO] [stderr]   Downloaded gio v0.15.12
[INFO] [stderr]   Downloaded cairo-rs v0.15.12
[INFO] [stderr]   Downloaded glib v0.15.12
[INFO] [stderr]   Downloaded atk v0.15.1
[INFO] [stderr]   Downloaded glib-macros v0.15.11
[INFO] [stderr]   Downloaded cairo-sys-rs v0.15.1
[INFO] [stderr]   Downloaded gdk-pixbuf-sys v0.15.10
[INFO] [stderr]   Downloaded gtk v0.15.5
[INFO] [stderr]   Downloaded tao v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db4e1d23234d93b5e96ecc768b35d9090c32cddf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b94ee8b92f3f57115c256be397c92e80aa765f5e1f215f1d1e4d05ad1c52049e
[INFO] running `Command { std: "docker" "start" "-a" "b94ee8b92f3f57115c256be397c92e80aa765f5e1f215f1d1e4d05ad1c52049e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b94ee8b92f3f57115c256be397c92e80aa765f5e1f215f1d1e4d05ad1c52049e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b94ee8b92f3f57115c256be397c92e80aa765f5e1f215f1d1e4d05ad1c52049e", kill_on_drop: false }`
[INFO] [stdout] b94ee8b92f3f57115c256be397c92e80aa765f5e1f215f1d1e4d05ad1c52049e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db4e1d23234d93b5e96ecc768b35d9090c32cddf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e27e874b991a34750bf2076fafb0be0ad28450e1efca7df9d561a1bfd36dae6
[INFO] running `Command { std: "docker" "start" "-a" "1e27e874b991a34750bf2076fafb0be0ad28450e1efca7df9d561a1bfd36dae6", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]    Compiling cfg-expr v0.10.3
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling gio v0.15.12
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking futures-io v0.3.24
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling x11 v2.20.0
[INFO] [stderr]    Compiling gtk v0.15.5
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.46/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 parking_lot_core v0.9.3
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling x11-dl v2.20.0
[INFO] [stderr]     Checking futures-sink v0.3.24
[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" "1e27e874b991a34750bf2076fafb0be0ad28450e1efca7df9d561a1bfd36dae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e27e874b991a34750bf2076fafb0be0ad28450e1efca7df9d561a1bfd36dae6", kill_on_drop: false }`
[INFO] [stdout] 1e27e874b991a34750bf2076fafb0be0ad28450e1efca7df9d561a1bfd36dae6
