[INFO] fetching crate ndless-freetype 0.1.3...
[INFO] checking ndless-freetype-0.1.3 against 1.95.0 for pr-155915
[INFO] extracting crate ndless-freetype 0.1.3 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate ndless-freetype 0.1.3
[INFO] finished tweaking crates.io crate ndless-freetype 0.1.3
[INFO] tweaked toml for crates.io crate ndless-freetype 0.1.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ndless-freetype 0.1.3 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--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]      Locking 8 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.11.1)
[INFO] [stderr]       Adding cstr_core v0.1.2 (available: v0.2.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cstr_core v0.1.2
[INFO] [stderr]   Downloaded embedded-freetype-sys v0.2.0
[INFO] [stderr]   Downloaded cty v0.1.5
[INFO] [stderr]   Downloaded ndless-sys v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6aa182d39421dbb940ed10c4d28588cb7fcdf981e4c303075a8390607a4fbfd
[INFO] running `Command { std: "docker" "start" "-a" "e6aa182d39421dbb940ed10c4d28588cb7fcdf981e4c303075a8390607a4fbfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6aa182d39421dbb940ed10c4d28588cb7fcdf981e4c303075a8390607a4fbfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6aa182d39421dbb940ed10c4d28588cb7fcdf981e4c303075a8390607a4fbfd", kill_on_drop: false }`
[INFO] [stdout] e6aa182d39421dbb940ed10c4d28588cb7fcdf981e4c303075a8390607a4fbfd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79b940f9b5f80cf2bc42aefb90b94ee4f3ca0253f5a04cf0e6f5f9686694644a
[INFO] running `Command { std: "docker" "start" "-a" "79b940f9b5f80cf2bc42aefb90b94ee4f3ca0253f5a04cf0e6f5f9686694644a", kill_on_drop: false }`
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]     Checking memchr v2.8.0
[INFO] [stderr]     Checking cty v0.1.5
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking ndless-sys v0.2.0
[INFO] [stderr]     Checking embedded-freetype-sys v0.2.0
[INFO] [stderr]     Checking cstr_core v0.1.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cstr_core-0.1.2/src/lib.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![cfg_attr(feature = "alloc", feature(alloc))]
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cstr_core` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "79b940f9b5f80cf2bc42aefb90b94ee4f3ca0253f5a04cf0e6f5f9686694644a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79b940f9b5f80cf2bc42aefb90b94ee4f3ca0253f5a04cf0e6f5f9686694644a", kill_on_drop: false }`
[INFO] [stdout] 79b940f9b5f80cf2bc42aefb90b94ee4f3ca0253f5a04cf0e6f5f9686694644a