[INFO] cloning repository https://github.com/wycats/argon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wycats/argon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwycats%2Fargon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwycats%2Fargon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e313b97680fdead6c34214040d0ad3eeeb485bb
[INFO] checking wycats/argon against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwycats%2Fargon" "/workspace/builds/worker-86/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-86/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wycats/argon 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/wycats/argon
[INFO] finished tweaking git repo https://github.com/wycats/argon
[INFO] tweaked toml for git repo https://github.com/wycats/argon written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] crate git repo https://github.com/wycats/argon 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] warning: /workspace/builds/worker-86/source/crates/argon-utils/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /workspace/builds/worker-86/source/crates/tests/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /workspace/builds/worker-86/source/crates/argon/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /workspace/builds/worker-86/source/crates/argon-package-bin/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /workspace/builds/worker-86/source/crates/argon-package/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /workspace/builds/worker-86/source/crates/argon-errors/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /workspace/builds/worker-86/source/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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] 845e4d8d4f5da5c7cbdffca93e182cd379793b320068e30aec4e2f3d11b4b69a
[INFO] running `Command { std: "docker" "start" "-a" "845e4d8d4f5da5c7cbdffca93e182cd379793b320068e30aec4e2f3d11b4b69a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "845e4d8d4f5da5c7cbdffca93e182cd379793b320068e30aec4e2f3d11b4b69a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "845e4d8d4f5da5c7cbdffca93e182cd379793b320068e30aec4e2f3d11b4b69a", kill_on_drop: false }`
[INFO] [stdout] 845e4d8d4f5da5c7cbdffca93e182cd379793b320068e30aec4e2f3d11b4b69a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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] 5af216e3c97ff84864e2a2e7d27d9f69d9ca092f2143f36d0178e05493143a09
[INFO] running `Command { std: "docker" "start" "-a" "5af216e3c97ff84864e2a2e7d27d9f69d9ca092f2143f36d0178e05493143a09", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /opt/rustwide/workdir/crates/argon-errors/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /opt/rustwide/workdir/crates/argon-package-bin/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /opt/rustwide/workdir/crates/argon-package/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /opt/rustwide/workdir/crates/argon/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /opt/rustwide/workdir/crates/argon-utils/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr] warning: /opt/rustwide/workdir/crates/tests/Cargo.toml: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking lazy_static v1.0.1
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]     Checking stable_deref_trait v1.1.0
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking nan-preserving-float v0.1.0
[INFO] [stderr]     Checking termcolor v1.0.1
[INFO] [stderr]     Checking shellexpand v1.0.0
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]     Checking seahash v3.0.5
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking lalrpop-util v0.15.2
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]    Compiling unindent v0.1.3
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking license-exprs v1.3.0
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking environment v0.1.1
[INFO] [stderr]     Checking lalrpop-util v0.15.2 (https://github.com/wycats/lalrpop.git?branch=module_attributes#2cf70880)
[INFO] [stderr]     Checking pathdiff v0.1.0
[INFO] [stderr]     Checking argon-utils v0.1.0 (/opt/rustwide/workdir/crates/argon-utils)
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking regex-syntax v0.6.1
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking clicolors-control v0.2.0
[INFO] [stderr]     Checking colored v1.6.0
[INFO] [stderr]    Compiling proc-macro-hack v0.4.0
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]     Checking rand v0.5.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking ena v0.9.3
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking smallvec v0.6.3
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]     Checking serde_json v1.0.22
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]    Compiling indoc-impl v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.67
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking render-tree v0.1.0 (https://github.com/wycats/language-reporting.git#e9eef475)
[INFO] [stderr]     Checking backtrace v0.3.8
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/language-reporting-bae87254abc3bc92/e9eef47/crates/render-tree/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking parity-wasm v0.27.6
[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 `render-tree` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5af216e3c97ff84864e2a2e7d27d9f69d9ca092f2143f36d0178e05493143a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5af216e3c97ff84864e2a2e7d27d9f69d9ca092f2143f36d0178e05493143a09", kill_on_drop: false }`
[INFO] [stdout] 5af216e3c97ff84864e2a2e7d27d9f69d9ca092f2143f36d0178e05493143a09
