[INFO] fetching crate emoji-crafter 0.1.2...
[INFO] checking emoji-crafter-0.1.2 against 1.55.0 for beta-1.56-3
[INFO] extracting crate emoji-crafter 0.1.2 into /workspace/builds/worker-98/source
[INFO] validating manifest of crates.io crate emoji-crafter 0.1.2 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 crates.io crate emoji-crafter 0.1.2
[INFO] finished tweaking crates.io crate emoji-crafter 0.1.2
[INFO] tweaked toml for crates.io crate emoji-crafter 0.1.2 written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] crate crates.io crate emoji-crafter 0.1.2 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 float-cmp v0.9.0
[INFO] [stderr]   Downloaded kurbo v0.8.0
[INFO] [stderr]   Downloaded svgtypes v0.8.0
[INFO] [stderr]   Downloaded clearscreen v1.0.7
[INFO] [stderr]   Downloaded tiny-skia v0.6.1
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[INFO] [stderr]   Downloaded usvg v0.18.0
[INFO] [stderr]   Downloaded png v0.17.1
[INFO] [stderr]   Downloaded memmap2 v0.3.1
[INFO] [stderr]   Downloaded deflate v0.9.1
[INFO] [stderr]   Downloaded unicode-general-category v0.4.0
[INFO] [stderr]   Downloaded rustybuzz v0.4.0
[INFO] [stderr]   Downloaded flate2 v1.0.21
[INFO] [stderr]   Downloaded serde_json v1.0.67
[INFO] [stderr]   Downloaded webp-animation v0.2.2
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[INFO] [stderr]   Downloaded terminfo v0.7.3
[INFO] [stderr]   Downloaded unicode-script v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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] e9b8184249f2ac5c9d890ba0c4528cf2c3ace0133297204e9dfb49533c442e3b
[INFO] running `Command { std: "docker" "start" "-a" "e9b8184249f2ac5c9d890ba0c4528cf2c3ace0133297204e9dfb49533c442e3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9b8184249f2ac5c9d890ba0c4528cf2c3ace0133297204e9dfb49533c442e3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9b8184249f2ac5c9d890ba0c4528cf2c3ace0133297204e9dfb49533c442e3b", kill_on_drop: false }`
[INFO] [stdout] e9b8184249f2ac5c9d890ba0c4528cf2c3ace0133297204e9dfb49533c442e3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f6380876f9e3f9a6e90f6c187c89d561caef442dd70daac7abd538dc1583e9e
[INFO] running `Command { std: "docker" "start" "-a" "5f6380876f9e3f9a6e90f6c187c89d561caef442dd70daac7abd538dc1583e9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]     Checking bytemuck v1.7.2
[INFO] [stderr]    Compiling unicode-general-category v0.4.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking ttf-parser v0.12.3
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking unicode-ccc v0.1.2
[INFO] [stderr]     Checking xmlparser v0.13.3
[INFO] [stderr]     Checking unicode-script v0.5.3
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking unicode-bidi-mirroring v0.1.0
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]     Checking pico-args v0.4.2
[INFO] [stderr]     Checking xmlwriter v0.1.0
[INFO] [stderr]     Checking rctree v0.4.0
[INFO] [stderr]     Checking unicode-vo v0.1.0
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking unicode-bidi v0.3.6
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling nom v5.1.2
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[INFO] [stderr]    Compiling libwebp-sys2 v0.1.2
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[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking console v0.14.1
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[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking webp-animation v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking notify v4.0.17
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling terminfo v0.7.3
[INFO] [stderr]     Checking usvg v0.18.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]     Checking resvg v0.18.0
[INFO] [stderr]     Checking structopt v0.3.23
[INFO] [stderr]     Checking thiserror v1.0.29
[INFO] [stderr]     Checking clearscreen v1.0.7
[INFO] [stderr]     Checking serde v1.0.130
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking emoji-crafter v0.1.2 (/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(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `emoji-crafter` due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "5f6380876f9e3f9a6e90f6c187c89d561caef442dd70daac7abd538dc1583e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f6380876f9e3f9a6e90f6c187c89d561caef442dd70daac7abd538dc1583e9e", kill_on_drop: false }`
[INFO] [stdout] 5f6380876f9e3f9a6e90f6c187c89d561caef442dd70daac7abd538dc1583e9e
