[INFO] fetching crate make_pluralrules 0.5.0...
[INFO] checking make_pluralrules-0.5.0 against beta for pr-78714
[INFO] extracting crate make_pluralrules 0.5.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate make_pluralrules 0.5.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] started tweaking crates.io crate make_pluralrules 0.5.0
[INFO] finished tweaking crates.io crate make_pluralrules 0.5.0
[INFO] tweaked toml for crates.io crate make_pluralrules 0.5.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate make_pluralrules 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 186953c7ce95187078836c465362aaf0b8f182508916f4fba9cbdc360349cf3f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "186953c7ce95187078836c465362aaf0b8f182508916f4fba9cbdc360349cf3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "186953c7ce95187078836c465362aaf0b8f182508916f4fba9cbdc360349cf3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "186953c7ce95187078836c465362aaf0b8f182508916f4fba9cbdc360349cf3f", kill_on_drop: false }`
[INFO] [stdout] 186953c7ce95187078836c465362aaf0b8f182508916f4fba9cbdc360349cf3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ac6776a79d4dd8e16cbd6c093a134300d0ae05a9eaa4c5c54fae7bce90ecab47
[INFO] running `Command { std: "docker" "start" "-a" "ac6776a79d4dd8e16cbd6c093a134300d0ae05a9eaa4c5c54fae7bce90ecab47", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]     Checking tinystr v0.3.2
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking itoa v0.4.2
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling lexical-core v0.4.6
[INFO] [stderr]     Checking arrayvec v0.4.12
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking unic-langid-impl v0.7.1
[INFO] [stderr]    Compiling nom v5.0.1
[INFO] [stderr]     Checking unic-langid v0.7.1
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking quote v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]     Checking cldr_pluralrules_parser v2.0.0
[INFO] [stderr]     Checking serde_json v1.0.22
[INFO] [stderr]     Checking make_pluralrules v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:62:70
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn gen_type_rs(rules: BTreeMap<String, BTreeMap<String, String>>) -> (Vec<TokenStream>) {
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/lib.rs:62:70
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn gen_type_rs(rules: BTreeMap<String, BTreeMap<String, String>>) -> (Vec<TokenStream>) {
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.06s
[INFO] running `Command { std: "docker" "inspect" "ac6776a79d4dd8e16cbd6c093a134300d0ae05a9eaa4c5c54fae7bce90ecab47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac6776a79d4dd8e16cbd6c093a134300d0ae05a9eaa4c5c54fae7bce90ecab47", kill_on_drop: false }`
[INFO] [stdout] ac6776a79d4dd8e16cbd6c093a134300d0ae05a9eaa4c5c54fae7bce90ecab47