[INFO] cloning repository https://github.com/dgriffith0/learn_wgpu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dgriffith0/learn_wgpu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgriffith0%2Flearn_wgpu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgriffith0%2Flearn_wgpu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a14e2d8e183d0b4abc0be15ea7be946323652379
[INFO] checking dgriffith0/learn_wgpu against try#de39175d9e0f63ff8967b81f9639ba28d11ae6ef for pr-135331
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgriffith0%2Flearn_wgpu" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dgriffith0/learn_wgpu on toolchain de39175d9e0f63ff8967b81f9639ba28d11ae6ef
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+de39175d9e0f63ff8967b81f9639ba28d11ae6ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dgriffith0/learn_wgpu
[INFO] finished tweaking git repo https://github.com/dgriffith0/learn_wgpu
[INFO] tweaked toml for git repo https://github.com/dgriffith0/learn_wgpu written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/dgriffith0/learn_wgpu 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" "+de39175d9e0f63ff8967b81f9639ba28d11ae6ef" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustix v0.37.8
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+de39175d9e0f63ff8967b81f9639ba28d11ae6ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f4b0133f9263f4d691036550786800dd73677c610c714bf790707d1ecbc2ae6
[INFO] running `Command { std: "docker" "start" "-a" "1f4b0133f9263f4d691036550786800dd73677c610c714bf790707d1ecbc2ae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f4b0133f9263f4d691036550786800dd73677c610c714bf790707d1ecbc2ae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f4b0133f9263f4d691036550786800dd73677c610c714bf790707d1ecbc2ae6", kill_on_drop: false }`
[INFO] [stdout] 1f4b0133f9263f4d691036550786800dd73677c610c714bf790707d1ecbc2ae6
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+de39175d9e0f63ff8967b81f9639ba28d11ae6ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c909ecd3c9db7ed37895f2fd99b43495deec1158c04d2c777e26019525d15cb5
[INFO] running `Command { std: "docker" "start" "-a" "c909ecd3c9db7ed37895f2fd99b43495deec1158c04d2c777e26019525d15cb5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking libloading v0.7.4
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/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]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]    Compiling khronos-egl v4.1.0
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking byteorder v1.4.3
[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" "c909ecd3c9db7ed37895f2fd99b43495deec1158c04d2c777e26019525d15cb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c909ecd3c9db7ed37895f2fd99b43495deec1158c04d2c777e26019525d15cb5", kill_on_drop: false }`
[INFO] [stdout] c909ecd3c9db7ed37895f2fd99b43495deec1158c04d2c777e26019525d15cb5