[INFO] fetching crate racer-testutils 0.1.0...
[INFO] checking racer-testutils-0.1.0 against try#7c3a44cf5f95fa5cf164a312bdcf845157af7093 for pr-77325
[INFO] extracting crate racer-testutils 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate racer-testutils 0.1.0 on toolchain 7c3a44cf5f95fa5cf164a312bdcf845157af7093
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate racer-testutils 0.1.0
[INFO] finished tweaking crates.io crate racer-testutils 0.1.0
[INFO] tweaked toml for crates.io crate racer-testutils 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v722.0.0
[INFO] [stderr]   Downloaded psm v0.1.13
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v722.0.0
[INFO] [stderr]   Downloaded measureme v9.1.2
[INFO] [stderr]   Downloaded rls-span v0.5.4
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v722.0.0
[INFO] [stderr]   Downloaded racer v2.1.48
[INFO] [stderr]   Downloaded stacker v0.1.14
[INFO] [stderr]   Downloaded rustc-ap-rustc_session v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v722.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lint_defs v722.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7fb2205d0afaa79e6a11e3ecf2d329f85ffe2195e22d40c6c7881601b1ab6f8f
[INFO] running `Command { std: "docker" "start" "-a" "7fb2205d0afaa79e6a11e3ecf2d329f85ffe2195e22d40c6c7881601b1ab6f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fb2205d0afaa79e6a11e3ecf2d329f85ffe2195e22d40c6c7881601b1ab6f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fb2205d0afaa79e6a11e3ecf2d329f85ffe2195e22d40c6c7881601b1ab6f8f", kill_on_drop: false }`
[INFO] [stdout] 7fb2205d0afaa79e6a11e3ecf2d329f85ffe2195e22d40c6c7881601b1ab6f8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69d8bf9db8ccf28c06aec4f425440f68177d33f4951549cf19ba148bc8cd858c
[INFO] running `Command { std: "docker" "start" "-a" "69d8bf9db8ccf28c06aec4f425440f68177d33f4951549cf19ba148bc8cd858c", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking arrayvec v0.7.1
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v722.0.0
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking annotate-snippets v0.8.0
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v722.0.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling psm v0.1.13
[INFO] [stderr]    Compiling stacker v0.1.14
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking memmap2 v0.2.3
[INFO] [stderr]     Checking perf-event-open-sys v1.0.1
[INFO] [stderr]     Checking jobserver v0.1.22
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termize v0.1.1
[INFO] [stderr]     Checking ena v0.14.0
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v722.0.0
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking measureme v9.1.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking rustc-ap-rustc_serialize v722.0.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking rustc-rayon v0.3.1
[INFO] [stderr]     Checking sha2 v0.9.5
[INFO] [stderr]     Checking sha-1 v0.9.6
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v722.0.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling derive_more v0.99.14
[INFO] [stderr]     Checking rustc-ap-rustc_index v722.0.0
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stdout] error[E0635]: unknown feature `trusted_step`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_index-722.0.0/src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(trusted_step)]
[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 E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-ap-rustc_index`
[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" "69d8bf9db8ccf28c06aec4f425440f68177d33f4951549cf19ba148bc8cd858c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69d8bf9db8ccf28c06aec4f425440f68177d33f4951549cf19ba148bc8cd858c", kill_on_drop: false }`
[INFO] [stdout] 69d8bf9db8ccf28c06aec4f425440f68177d33f4951549cf19ba148bc8cd858c