[INFO] fetching crate rustfmt_lib 2.0.0-rc.1...
[INFO] checking rustfmt_lib-2.0.0-rc.1 against master#914adf04af1c1a984707f778da3d04590c03d144 for pr-72331
[INFO] extracting crate rustfmt_lib 2.0.0-rc.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rustfmt_lib 2.0.0-rc.1 on toolchain 914adf04af1c1a984707f778da3d04590c03d144
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rustfmt_lib 2.0.0-rc.1
[INFO] finished tweaking crates.io crate rustfmt_lib 2.0.0-rc.1
[INFO] tweaked toml for crates.io crate rustfmt_lib 2.0.0-rc.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1a5c7e7005b4a8599e2bd82f1b23e4285ba27dd03d691d336f31118ec45c4ad0
[INFO] running `"docker" "start" "-a" "1a5c7e7005b4a8599e2bd82f1b23e4285ba27dd03d691d336f31118ec45c4ad0"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.23
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking rustc-ap-graphviz v654.0.0
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_ast v654.0.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling rustc-ap-rustc_target v654.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v654.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v654.0.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking annotate-snippets v0.6.1
[INFO] [stderr]     Checking ena v0.13.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking jobserver v0.1.21
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termize v0.1.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rustc-ap-serialize v654.0.0
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking measureme v0.7.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking rustc-rayon v0.3.0
[INFO] [stderr]     Checking md-5 v0.8.0
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking rustc-ap-rustc_index v654.0.0
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v654.0.0
[INFO] [stderr]     Checking ignore v0.4.15
[INFO] [stderr]     Checking rustc-ap-arena v654.0.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v654.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling thiserror-impl v1.0.18
[INFO] [stderr]    Compiling rustfmt-config_proc_macro v0.5.0
[INFO] [stderr]     Checking thiserror v1.0.18
[INFO] [stderr]     Checking rustc-ap-rustc_span v654.0.0
[INFO] [stderr] error[E0407]: method `replace_one` is not a member of trait `std::iter::Step`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / rustc_index::newtype_index! {
[INFO] [stderr] 12 | |     pub struct CrateId {
[INFO] [stderr] 13 | |         ENCODABLE = custom
[INFO] [stderr] 14 | |     }
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `replace_zero` is not a member of trait `std::iter::Step`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / rustc_index::newtype_index! {
[INFO] [stderr] 12 | |     pub struct CrateId {
[INFO] [stderr] 13 | |         ENCODABLE = custom
[INFO] [stderr] 14 | |     }
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `add_one` is not a member of trait `std::iter::Step`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / rustc_index::newtype_index! {
[INFO] [stderr] 12 | |     pub struct CrateId {
[INFO] [stderr] 13 | |         ENCODABLE = custom
[INFO] [stderr] 14 | |     }
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `sub_one` is not a member of trait `std::iter::Step`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / rustc_index::newtype_index! {
[INFO] [stderr] 12 | |     pub struct CrateId {
[INFO] [stderr] 13 | |         ENCODABLE = custom
[INFO] [stderr] 14 | |     }
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `add_usize` is not a member of trait `std::iter::Step`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / rustc_index::newtype_index! {
[INFO] [stderr] 12 | |     pub struct CrateId {
[INFO] [stderr] 13 | |         ENCODABLE = custom
[INFO] [stderr] 14 | |     }
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `sub_usize` is not a member of trait `std::iter::Step`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / rustc_index::newtype_index! {
[INFO] [stderr] 12 | |     pub struct CrateId {
[INFO] [stderr] 13 | |         ENCODABLE = custom
[INFO] [stderr] 14 | |     }
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `replace_one` is not a member of trait `std::iter::Step`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | / rustc_index::newtype_index! {
[INFO] [stderr] 119 | |     /// A DefIndex is an index into the hir-map for a crate, identifying a
[INFO] [stderr] 120 | |     /// particular definition. It should really be considered an interned
[INFO] [stderr] 121 | |     /// shorthand for a particular DefPath.
[INFO] [stderr] ...   |
[INFO] [stderr] 128 | |     }
[INFO] [stderr] 129 | | }
[INFO] [stderr]     | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `replace_zero` is not a member of trait `std::iter::Step`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | / rustc_index::newtype_index! {
[INFO] [stderr] 119 | |     /// A DefIndex is an index into the hir-map for a crate, identifying a
[INFO] [stderr] 120 | |     /// particular definition. It should really be considered an interned
[INFO] [stderr] 121 | |     /// shorthand for a particular DefPath.
[INFO] [stderr] ...   |
[INFO] [stderr] 128 | |     }
[INFO] [stderr] 129 | | }
[INFO] [stderr]     | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `add_one` is not a member of trait `std::iter::Step`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | / rustc_index::newtype_index! {
[INFO] [stderr] 119 | |     /// A DefIndex is an index into the hir-map for a crate, identifying a
[INFO] [stderr] 120 | |     /// particular definition. It should really be considered an interned
[INFO] [stderr] 121 | |     /// shorthand for a particular DefPath.
[INFO] [stderr] ...   |
[INFO] [stderr] 128 | |     }
[INFO] [stderr] 129 | | }
[INFO] [stderr]     | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `sub_one` is not a member of trait `std::iter::Step`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | / rustc_index::newtype_index! {
[INFO] [stderr] 119 | |     /// A DefIndex is an index into the hir-map for a crate, identifying a
[INFO] [stderr] 120 | |     /// particular definition. It should really be considered an interned
[INFO] [stderr] 121 | |     /// shorthand for a particular DefPath.
[INFO] [stderr] ...   |
[INFO] [stderr] 128 | |     }
[INFO] [stderr] 129 | | }
[INFO] [stderr]     | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `add_usize` is not a member of trait `std::iter::Step`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | / rustc_index::newtype_index! {
[INFO] [stderr] 119 | |     /// A DefIndex is an index into the hir-map for a crate, identifying a
[INFO] [stderr] 120 | |     /// particular definition. It should really be considered an interned
[INFO] [stderr] 121 | |     /// shorthand for a particular DefPath.
[INFO] [stderr] ...   |
[INFO] [stderr] 128 | |     }
[INFO] [stderr] 129 | | }
[INFO] [stderr]     | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `sub_usize` is not a member of trait `std::iter::Step`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | / rustc_index::newtype_index! {
[INFO] [stderr] 119 | |     /// A DefIndex is an index into the hir-map for a crate, identifying a
[INFO] [stderr] 120 | |     /// particular definition. It should really be considered an interned
[INFO] [stderr] 121 | |     /// shorthand for a particular DefPath.
[INFO] [stderr] ...   |
[INFO] [stderr] 128 | |     }
[INFO] [stderr] 129 | | }
[INFO] [stderr]     | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `replace_one` is not a member of trait `std::iter::Step`
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/symbol.rs:1029:1
[INFO] [stderr]      |
[INFO] [stderr] 1029 | / rustc_index::newtype_index! {
[INFO] [stderr] 1030 | |     pub struct SymbolIndex { .. }
[INFO] [stderr] 1031 | | }
[INFO] [stderr]      | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]      |
[INFO] [stderr]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `replace_zero` is not a member of trait `std::iter::Step`
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/symbol.rs:1029:1
[INFO] [stderr]      |
[INFO] [stderr] 1029 | / rustc_index::newtype_index! {
[INFO] [stderr] 1030 | |     pub struct SymbolIndex { .. }
[INFO] [stderr] 1031 | | }
[INFO] [stderr]      | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]      |
[INFO] [stderr]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `add_one` is not a member of trait `std::iter::Step`
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/symbol.rs:1029:1
[INFO] [stderr]      |
[INFO] [stderr] 1029 | / rustc_index::newtype_index! {
[INFO] [stderr] 1030 | |     pub struct SymbolIndex { .. }
[INFO] [stderr] 1031 | | }
[INFO] [stderr]      | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]      |
[INFO] [stderr]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `sub_one` is not a member of trait `std::iter::Step`
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/symbol.rs:1029:1
[INFO] [stderr]      |
[INFO] [stderr] 1029 | / rustc_index::newtype_index! {
[INFO] [stderr] 1030 | |     pub struct SymbolIndex { .. }
[INFO] [stderr] 1031 | | }
[INFO] [stderr]      | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]      |
[INFO] [stderr]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `add_usize` is not a member of trait `std::iter::Step`
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/symbol.rs:1029:1
[INFO] [stderr]      |
[INFO] [stderr] 1029 | / rustc_index::newtype_index! {
[INFO] [stderr] 1030 | |     pub struct SymbolIndex { .. }
[INFO] [stderr] 1031 | | }
[INFO] [stderr]      | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]      |
[INFO] [stderr]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0407]: method `sub_usize` is not a member of trait `std::iter::Step`
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/symbol.rs:1029:1
[INFO] [stderr]      |
[INFO] [stderr] 1029 | / rustc_index::newtype_index! {
[INFO] [stderr] 1030 | |     pub struct SymbolIndex { .. }
[INFO] [stderr] 1031 | | }
[INFO] [stderr]      | |_^ not a member of trait `std::iter::Step`
[INFO] [stderr]      |
[INFO] [stderr]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0200]: the trait `std::iter::Step` requires an `unsafe impl` declaration
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / rustc_index::newtype_index! {
[INFO] [stderr] 12 | |     pub struct CrateId {
[INFO] [stderr] 13 | |         ENCODABLE = custom
[INFO] [stderr] 14 | |     }
[INFO] [stderr] 15 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0200]: the trait `std::iter::Step` requires an `unsafe impl` declaration
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/def_id.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | / rustc_index::newtype_index! {
[INFO] [stderr] 119 | |     /// A DefIndex is an index into the hir-map for a crate, identifying a
[INFO] [stderr] 120 | |     /// particular definition. It should really be considered an interned
[INFO] [stderr] 121 | |     /// shorthand for a particular DefPath.
[INFO] [stderr] ...   |
[INFO] [stderr] 128 | |     }
[INFO] [stderr] 129 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0200]: the trait `std::iter::Step` requires an `unsafe impl` declaration
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-654.0.0/symbol.rs:1029:1
[INFO] [stderr]      |
[INFO] [stderr] 1029 | / rustc_index::newtype_index! {
[INFO] [stderr] 1030 | |     pub struct SymbolIndex { .. }
[INFO] [stderr] 1031 | | }
[INFO] [stderr]      | |_^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 21 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0200, E0407.
[INFO] [stderr] For more information about an error, try `rustc --explain E0200`.
[INFO] [stderr] error: could not compile `rustc-ap-rustc_span`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "1a5c7e7005b4a8599e2bd82f1b23e4285ba27dd03d691d336f31118ec45c4ad0"`
[INFO] running `"docker" "rm" "-f" "1a5c7e7005b4a8599e2bd82f1b23e4285ba27dd03d691d336f31118ec45c4ad0"`
[INFO] [stdout] 1a5c7e7005b4a8599e2bd82f1b23e4285ba27dd03d691d336f31118ec45c4ad0