[INFO] cloning repository https://github.com/davidneumann/rust-glyph-recog [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidneumann/rust-glyph-recog" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidneumann%2Frust-glyph-recog", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidneumann%2Frust-glyph-recog'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] deb8adf86c26494330af38b4e02a11d7495ed88b [INFO] testing davidneumann/rust-glyph-recog against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidneumann%2Frust-glyph-recog" "/workspace/builds/worker-87/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-87/source'... [INFO] [stderr] done. [INFO] [stderr] Updating files: 7% (1107/15600) Updating files: 8% (1248/15600) Updating files: 9% (1404/15600) Updating files: 10% (1560/15600) Updating files: 11% (1716/15600) Updating files: 12% (1872/15600) Updating files: 13% (2028/15600) Updating files: 14% (2184/15600) Updating files: 15% (2340/15600) Updating files: 16% (2496/15600) Updating files: 17% (2652/15600) Updating files: 18% (2808/15600) Updating files: 19% (2964/15600) Updating files: 20% (3120/15600) Updating files: 21% (3276/15600) Updating files: 22% (3432/15600) Updating files: 23% (3588/15600) Updating files: 24% (3744/15600) Updating files: 24% (3878/15600) Updating files: 25% (3900/15600) Updating files: 26% (4056/15600) Updating files: 27% (4212/15600) Updating files: 28% (4368/15600) Updating files: 29% (4524/15600) Updating files: 30% (4680/15600) Updating files: 31% (4836/15600) Updating files: 32% (4992/15600) Updating files: 33% (5148/15600) Updating files: 34% (5304/15600) Updating files: 35% (5460/15600) Updating files: 36% (5616/15600) Updating files: 37% (5772/15600) Updating files: 38% (5928/15600) Updating files: 39% (6084/15600) Updating files: 40% (6240/15600) Updating files: 41% (6396/15600) Updating files: 42% (6552/15600) Updating files: 43% (6708/15600) Updating files: 44% (6864/15600) Updating files: 45% (7020/15600) Updating files: 46% (7176/15600) Updating files: 47% (7332/15600) Updating files: 48% (7488/15600) Updating files: 49% (7644/15600) Updating files: 50% (7800/15600) Updating files: 51% (7956/15600) Updating files: 52% (8112/15600) Updating files: 53% (8268/15600) Updating files: 54% (8424/15600) Updating files: 55% (8580/15600) Updating files: 56% (8736/15600) Updating files: 57% (8892/15600) Updating files: 58% (9048/15600) Updating files: 59% (9204/15600) Updating files: 60% (9360/15600) Updating files: 61% (9516/15600) Updating files: 62% (9672/15600) Updating files: 63% (9828/15600) Updating files: 64% (9984/15600) Updating files: 65% (10140/15600) Updating files: 66% (10296/15600) Updating files: 67% (10452/15600) Updating files: 68% (10608/15600) Updating files: 69% (10764/15600) Updating files: 70% (10920/15600) Updating files: 71% (11076/15600) Updating files: 72% (11232/15600) Updating files: 73% (11388/15600) Updating files: 74% (11544/15600) Updating files: 75% (11700/15600) Updating files: 76% (11856/15600) Updating files: 77% (12012/15600) Updating files: 78% (12168/15600) Updating files: 79% (12324/15600) Updating files: 80% (12480/15600) Updating files: 81% (12636/15600) Updating files: 82% (12792/15600) Updating files: 83% (12948/15600) Updating files: 84% (13104/15600) Updating files: 84% (13125/15600) Updating files: 85% (13260/15600) Updating files: 86% (13416/15600) Updating files: 87% (13572/15600) Updating files: 88% (13728/15600) Updating files: 89% (13884/15600) Updating files: 90% (14040/15600) Updating files: 91% (14196/15600) Updating files: 92% (14352/15600) Updating files: 93% (14508/15600) Updating files: 94% (14664/15600) Updating files: 95% (14820/15600) Updating files: 96% (14976/15600) Updating files: 97% (15132/15600) Updating files: 98% (15288/15600) Updating files: 99% (15444/15600) Updating files: 100% (15600/15600) Updating files: 100% (15600/15600), done. [INFO] validating manifest of git repo https://github.com/davidneumann/rust-glyph-recog on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/davidneumann/rust-glyph-recog [INFO] finished tweaking git repo https://github.com/davidneumann/rust-glyph-recog [INFO] tweaked toml for git repo https://github.com/davidneumann/rust-glyph-recog written to /workspace/builds/worker-87/source/Cargo.toml [INFO] crate git repo https://github.com/davidneumann/rust-glyph-recog already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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 trees v0.4.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 33490e3178e41a08eeb9521f80c2b80d7d89c6629182b5240b640fb5377a922d [INFO] running `Command { std: "docker" "start" "-a" "33490e3178e41a08eeb9521f80c2b80d7d89c6629182b5240b640fb5377a922d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "33490e3178e41a08eeb9521f80c2b80d7d89c6629182b5240b640fb5377a922d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "33490e3178e41a08eeb9521f80c2b80d7d89c6629182b5240b640fb5377a922d", kill_on_drop: false }` [INFO] [stdout] 33490e3178e41a08eeb9521f80c2b80d7d89c6629182b5240b640fb5377a922d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 92ee3a01d99af8ca103e88000ba69f27579fd47e6936787c63f12f53088aeccd [INFO] running `Command { std: "docker" "start" "-a" "92ee3a01d99af8ca103e88000ba69f27579fd47e6936787c63f12f53088aeccd", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling libc v0.2.94 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling ppv-lite86 v0.2.10 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling trees v0.4.2 [INFO] [stderr] Compiling crossbeam-utils v0.8.4 [INFO] [stderr] Compiling memoffset v0.6.3 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling rand_core v0.6.2 [INFO] [stderr] Compiling rand_chacha v0.3.0 [INFO] [stderr] Compiling crossbeam-epoch v0.9.4 [INFO] [stderr] Compiling crossbeam-channel v0.5.1 [INFO] [stderr] Compiling rand v0.8.3 [INFO] [stderr] Compiling crossbeam-deque v0.8.0 [INFO] [stderr] Compiling rust-glyph-recog v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(test)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-glyph-recog` due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "92ee3a01d99af8ca103e88000ba69f27579fd47e6936787c63f12f53088aeccd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "92ee3a01d99af8ca103e88000ba69f27579fd47e6936787c63f12f53088aeccd", kill_on_drop: false }` [INFO] [stdout] 92ee3a01d99af8ca103e88000ba69f27579fd47e6936787c63f12f53088aeccd