[INFO] cloning repository https://github.com/harmony-development/scherzo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/harmony-development/scherzo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharmony-development%2Fscherzo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharmony-development%2Fscherzo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c90b1287d8c41f7683fd79c600f27ce3536d643
[INFO] testing harmony-development/scherzo against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharmony-development%2Fscherzo" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/harmony-development/scherzo on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-12/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-12/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/harmony-development/scherzo
[INFO] finished tweaking git repo https://github.com/harmony-development/scherzo
[INFO] tweaked toml for git repo https://github.com/harmony-development/scherzo written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/harmony-development/scherzo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9dae10a55456cc179abb66f3525a491fca9c4826eb821c4d6cb3b7751c2caebc
[INFO] running `Command { std: "docker" "start" "-a" "9dae10a55456cc179abb66f3525a491fca9c4826eb821c4d6cb3b7751c2caebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9dae10a55456cc179abb66f3525a491fca9c4826eb821c4d6cb3b7751c2caebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dae10a55456cc179abb66f3525a491fca9c4826eb821c4d6cb3b7751c2caebc", kill_on_drop: false }`
[INFO] [stdout] 9dae10a55456cc179abb66f3525a491fca9c4826eb821c4d6cb3b7751c2caebc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15dfb96205551636e0070ebca32cacdf25772452e813b9bc76927a8f3e1e083c
[INFO] running `Command { std: "docker" "start" "-a" "15dfb96205551636e0070ebca32cacdf25772452e813b9bc76927a8f3e1e083c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
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[INFO] [stderr]    Compiling either v1.6.1
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[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.16
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[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling bitflags v1.2.1
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[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling httpdate v1.0.1
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[INFO] [stderr]    Compiling multimap v0.8.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling zstd-safe v2.0.6+zstd.1.4.7
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling scoped-tls v1.0.0
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[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling cached_proc_macro_types v0.1.0 (https://github.com/yusdacra/cached.git?branch=chore/deps#a0879d5d)
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling ansi_term v0.12.1
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[INFO] [stderr]    Compiling sharded-slab v0.1.3
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[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.5
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling phf_shared v0.9.0
[INFO] [stderr]    Compiling http v0.2.4
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling unicase v2.6.0
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[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling futf v0.1.4
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling radix_trie v0.2.1
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[INFO] [stderr]    Compiling phf v0.9.1
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[INFO] [stderr]    Compiling twoway v0.1.8
[INFO] [stderr]    Compiling buf_redux v0.8.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
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[INFO] [stderr]    Compiling mime_guess v2.0.3
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[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling socket2 v0.4.1
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[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling fd-lock v2.0.0
[INFO] [stderr]    Compiling regex-automata v0.1.10
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[INFO] [stderr]    Compiling block-buffer v0.9.0
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[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling ed25519-compact v0.1.9
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling prost-build v0.8.0
[INFO] [stderr]    Compiling sha-1 v0.9.7
[INFO] [stderr]    Compiling sha3 v0.9.1
[INFO] [stderr]    Compiling http-body v0.4.2
[INFO] [stderr]    Compiling headers-core v0.2.0
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling dashmap v4.0.2 (https://github.com/jackthomson2/dashmap.git?branch=master#5c470f5f)
[INFO] [stderr]    Compiling headers v0.3.4
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling zstd-sys v1.4.18+zstd.1.4.7
[INFO] [stderr]    Compiling phf_generator v0.9.1
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling phf_codegen v0.9.1
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1 (https://github.com/yusdacra/string-cache.git?branch=chore/deps#dd1c76cd)
[INFO] [stderr]    Compiling multipart v0.18.0
[INFO] [stderr]    Compiling markup5ever v0.10.1 (https://github.com/servo/html5ever.git?rev=0e03e1c2b1f63e81f831fd95b9eb8bbde18b7815#0e03e1c2)
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling rustyline v8.2.0
[INFO] [stderr]    Compiling webpki v0.21.4
[INFO] [stderr]    Compiling sct v0.6.1
[INFO] [stderr]    Compiling rustls v0.19.1
[INFO] [stderr]    Compiling webpki-roots v0.21.1
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling prost-derive v0.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling harmony_derive v0.1.2 (https://github.com/harmony-development/harmony_rust_sdk.git?branch=master#c2dbd66f)
[INFO] [stderr]    Compiling git-version-macro v0.3.5
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling derive-new v0.5.9
[INFO] [stderr]    Compiling scherzo_derive v0.1.0 (/opt/rustwide/workdir/scherzo_derive)
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling git-version v0.3.5
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling rustls-native-certs v0.5.0
[INFO] [stderr]    Compiling cached_proc_macro v0.6.0 (https://github.com/yusdacra/cached.git?branch=chore/deps#a0879d5d)
[INFO] [stderr]    Compiling tungstenite v0.14.0
[INFO] [stderr]    Compiling prost v0.8.0
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling prost-types v0.8.0
[INFO] [stderr]    Compiling cached v0.23.0 (https://github.com/yusdacra/cached.git?branch=chore/deps#a0879d5d)
[INFO] [stderr]    Compiling futures v0.3.16
[INFO] [stderr]    Compiling hrpc-build v0.7.3
[INFO] [stderr]    Compiling harmony_rust_sdk v0.6.1 (https://github.com/harmony-development/harmony_rust_sdk.git?branch=master#c2dbd66f)
[INFO] [stderr]    Compiling tokio-util v0.6.7
[INFO] [stderr]    Compiling tokio-rustls v0.22.0
[INFO] [stderr]    Compiling tokio-stream v0.1.7
[INFO] [stderr]    Compiling tokio-tungstenite v0.15.0
[INFO] [stderr]    Compiling h2 v0.3.3
[INFO] [stderr]    Compiling string_cache v0.8.1 (https://github.com/yusdacra/string-cache.git?branch=chore/deps#dd1c76cd)
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling smol_str v0.1.18
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling tracing-subscriber v0.2.19
[INFO] [stderr]    Compiling xml5ever v0.16.1
[INFO] [stderr]    Compiling zstd v0.5.4+zstd.1.4.7
[INFO] [stderr]    Compiling sled v0.34.6
[INFO] [stderr]    Compiling markup5ever_rcdom v0.1.0
[INFO] [stderr]    Compiling webpage v1.3.0 (https://github.com/yusdacra/webpage-rs.git?branch=chore/deps#fae87d37)
[INFO] [stderr]    Compiling tracing-appender v0.1.2
[INFO] [stderr]    Compiling hyper v0.14.11
[INFO] [stderr]    Compiling hyper-rustls v0.22.1
[INFO] [stderr]    Compiling warp v0.3.1 (https://github.com/yusdacra/warp.git?branch=chore/deps#2ee2a59d)
[INFO] [stderr]    Compiling reqwest v0.11.4
[INFO] [stderr]    Compiling hrpc v0.10.4
[INFO] [stderr]    Compiling scherzo 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(option_result_unwrap_unchecked)]
[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 `scherzo`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "15dfb96205551636e0070ebca32cacdf25772452e813b9bc76927a8f3e1e083c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15dfb96205551636e0070ebca32cacdf25772452e813b9bc76927a8f3e1e083c", kill_on_drop: false }`
[INFO] [stdout] 15dfb96205551636e0070ebca32cacdf25772452e813b9bc76927a8f3e1e083c
