[INFO] cloning repository https://github.com/lf-/synthtoy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lf-/synthtoy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flf-%2Fsynthtoy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flf-%2Fsynthtoy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3702a90599dc3b6e65ce2c32d1155530b3172fd
[INFO] checking lf-/synthtoy against try#377afada703be70d3fdff9164a481570a3cba7fe for pr-113240
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flf-%2Fsynthtoy" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lf-/synthtoy on toolchain 377afada703be70d3fdff9164a481570a3cba7fe
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lf-/synthtoy
[INFO] finished tweaking git repo https://github.com/lf-/synthtoy
[INFO] tweaked toml for git repo https://github.com/lf-/synthtoy written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/lf-/synthtoy 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" "+377afada703be70d3fdff9164a481570a3cba7fe" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 763d53285ca3a028c2d825ce63a401bdf997ff9a12b4ecb1bf2f15a4e70ad256
[INFO] running `Command { std: "docker" "start" "-a" "763d53285ca3a028c2d825ce63a401bdf997ff9a12b4ecb1bf2f15a4e70ad256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "763d53285ca3a028c2d825ce63a401bdf997ff9a12b4ecb1bf2f15a4e70ad256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "763d53285ca3a028c2d825ce63a401bdf997ff9a12b4ecb1bf2f15a4e70ad256", kill_on_drop: false }`
[INFO] [stdout] 763d53285ca3a028c2d825ce63a401bdf997ff9a12b4ecb1bf2f15a4e70ad256
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2242ab9d29a86624ff9887a1f7e941ef65e4b92477500d95bfc6a890114e51e9
[INFO] running `Command { std: "docker" "start" "-a" "2242ab9d29a86624ff9887a1f7e941ef65e4b92477500d95bfc6a890114e51e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling cc v1.0.77
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling yeslogic-fontconfig-sys v3.2.0
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling io-lifetimes v1.0.2
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling rustix v0.36.3
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]     Checking memoffset v0.6.5
[INFO] [stderr]    Compiling font-kit v0.11.0
[INFO] [stderr]     Checking linux-raw-sys v0.1.3
[INFO] [stderr]     Checking jpeg-decoder v0.3.0
[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 sdl2-sys v0.35.2
[INFO] [stderr]     Checking bytemuck v1.12.3
[INFO] [stderr]     Checking flate2 v1.0.25
[INFO] [stdout] error: aborting due to 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" "2242ab9d29a86624ff9887a1f7e941ef65e4b92477500d95bfc6a890114e51e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2242ab9d29a86624ff9887a1f7e941ef65e4b92477500d95bfc6a890114e51e9", kill_on_drop: false }`
[INFO] [stdout] 2242ab9d29a86624ff9887a1f7e941ef65e4b92477500d95bfc6a890114e51e9