[INFO] fetching crate racer 2.1.48...
[INFO] checking racer-2.1.48 against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] extracting crate racer 2.1.48 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate racer 2.1.48 on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-15/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate racer 2.1.48
[INFO] finished tweaking crates.io crate racer 2.1.48
[INFO] tweaked toml for crates.io crate racer 2.1.48 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate racer 2.1.48 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sha-1 v0.9.2
[INFO] [stderr]   Downloaded sha2 v0.9.2
[INFO] [stderr]   Downloaded parking_lot_core v0.8.0
[INFO] [stderr]   Downloaded ryu v1.0.3
[INFO] [stderr]   Downloaded cloudabi v0.1.0
[INFO] [stderr]   Downloaded regex v1.3.6
[INFO] [stderr]   Downloaded serde_json v1.0.50
[INFO] [stderr]   Downloaded memmap2 v0.2.2
[INFO] [stderr]   Downloaded cc v1.0.53
[INFO] [stderr]   Downloaded arrayvec v0.7.0
[INFO] [stderr]   Downloaded derive_more v0.99.5
[INFO] [stderr]   Downloaded rls-span v0.5.2
[INFO] [stderr]   Downloaded serde_derive v1.0.105
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v718.0.0
[INFO] [stderr]   Downloaded racer-testutils v0.1.0
[INFO] [stderr]   Downloaded measureme v9.1.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v718.0.0
[INFO] [stderr]   Downloaded parking_lot v0.11.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lint_defs v718.0.0
[INFO] [stderr]   Downloaded serde v1.0.105
[INFO] [stderr]   Downloaded winapi-util v0.1.4
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v718.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v718.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v718.0.0
[INFO] [stderr]   Downloaded instant v0.1.7
[INFO] [stderr]   Downloaded tracing-attributes v0.1.11
[INFO] [stderr]   Downloaded quote v1.0.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.10
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v718.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v718.0.0
[INFO] [stderr]   Downloaded tracing-core v0.1.15
[INFO] [stderr]   Downloaded rustc-ap-rustc_session v718.0.0
[INFO] [stderr]   Downloaded tracing v0.1.19
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v718.0.0
[INFO] [stderr]   Downloaded stacker v0.1.12
[INFO] [stderr]   Downloaded hashbrown v0.8.2
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v718.0.0
[INFO] [stderr]   Downloaded indexmap v1.5.2
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v718.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v718.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v718.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v718.0.0
[INFO] [stderr]   Downloaded hermit-abi v0.1.10
[INFO] [stderr]   Downloaded syn v1.0.17
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v718.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v718.0.0
[INFO] [stderr]   Downloaded psm v0.1.8
[INFO] [stderr]   Downloaded racer v2.1.47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc531c2edbf5973e104b6006b4f2a4039d2b24f78a1d7d1319925c5f9bfc3aa6
[INFO] running `Command { std: "docker" "start" "-a" "bc531c2edbf5973e104b6006b4f2a4039d2b24f78a1d7d1319925c5f9bfc3aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc531c2edbf5973e104b6006b4f2a4039d2b24f78a1d7d1319925c5f9bfc3aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc531c2edbf5973e104b6006b4f2a4039d2b24f78a1d7d1319925c5f9bfc3aa6", kill_on_drop: false }`
[INFO] [stdout] bc531c2edbf5973e104b6006b4f2a4039d2b24f78a1d7d1319925c5f9bfc3aa6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f1921365c7fcf6ef226a346231980e544f45d9d6d4a400f5416ebde3cf7481d
[INFO] running `Command { std: "docker" "start" "-a" "4f1921365c7fcf6ef226a346231980e544f45d9d6d4a400f5416ebde3cf7481d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling cc v1.0.53
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking arrayvec v0.7.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v718.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v722.0.0
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]     Checking annotate-snippets v0.8.0
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking humantime v2.0.0
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v718.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v722.0.0
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling indexmap v1.5.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]     Checking instant v0.1.7
[INFO] [stderr]     Checking tracing-core v0.1.15
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking libc v0.2.77
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking ena v0.14.0
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v718.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v722.0.0
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking perf-event-open-sys v1.0.1
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking memmap2 v0.2.2
[INFO] [stderr]     Checking jobserver v0.1.21
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termize v0.1.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking rustc-ap-rustc_serialize v718.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_serialize v722.0.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking sha-1 v0.9.2
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]     Checking sha2 v0.9.2
[INFO] [stderr]    Compiling psm v0.1.8
[INFO] [stderr]    Compiling stacker v0.1.12
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking measureme v9.1.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking rustc-rayon v0.3.1
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v722.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v718.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling derive_more v0.99.5
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking rustc-ap-rustc_index v718.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_index v722.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v718.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v722.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_arena v718.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_span v718.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_arena v722.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_span v722.0.0
[INFO] [stdout] error[E0199]: implementing the trait `Step` is not unsafe
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-718.0.0/src/def_id.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / rustc_index::newtype_index! {
[INFO] [stdout] 13 | |     pub struct CrateId {
[INFO] [stdout] 14 | |         ENCODABLE = custom
[INFO] [stdout] 15 | |     }
[INFO] [stdout] 16 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::newtype_index` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0199]: implementing the trait `Step` is not unsafe
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-718.0.0/src/def_id.rs:208:1
[INFO] [stdout]     |
[INFO] [stdout] 208 | / rustc_index::newtype_index! {
[INFO] [stdout] 209 | |     /// A DefIndex is an index into the hir-map for a crate, identifying a
[INFO] [stdout] 210 | |     /// particular definition. It should really be considered an interned
[INFO] [stdout] 211 | |     /// shorthand for a particular DefPath.
[INFO] [stdout] ...   |
[INFO] [stdout] 219 | |     }
[INFO] [stdout] 220 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::newtype_index` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0199]: implementing the trait `Step` is not unsafe
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-718.0.0/src/symbol.rs:1510:1
[INFO] [stdout]      |
[INFO] [stdout] 1510 | / rustc_index::newtype_index! {
[INFO] [stdout] 1511 | |     pub struct SymbolIndex { .. }
[INFO] [stdout] 1512 | | }
[INFO] [stdout]      | |_^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::newtype_index` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0199`.
[INFO] [stdout] 
[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 `Command { std: "docker" "inspect" "4f1921365c7fcf6ef226a346231980e544f45d9d6d4a400f5416ebde3cf7481d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f1921365c7fcf6ef226a346231980e544f45d9d6d4a400f5416ebde3cf7481d", kill_on_drop: false }`
[INFO] [stdout] 4f1921365c7fcf6ef226a346231980e544f45d9d6d4a400f5416ebde3cf7481d