[INFO] fetching crate iftree 1.0.4...
[INFO] checking iftree-1.0.4 against master#4d1bd0db7f489b22c6d8aa2385937a95412c015b for pr-114682
[INFO] extracting crate iftree 1.0.4 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate iftree 1.0.4 on toolchain 4d1bd0db7f489b22c6d8aa2385937a95412c015b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iftree 1.0.4
[INFO] finished tweaking crates.io crate iftree 1.0.4
[INFO] tweaked toml for crates.io crate iftree 1.0.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate iftree 1.0.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-global-executor v2.0.2
[INFO] [stderr]   Downloaded value-bag v1.0.0-alpha.8
[INFO] [stderr]   Downloaded time-macros v0.2.3
[INFO] [stderr]   Downloaded firestorm v0.5.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.7
[INFO] [stderr]   Downloaded devise v0.3.1
[INFO] [stderr]   Downloaded multer v2.0.2
[INFO] [stderr]   Downloaded sval v1.0.0-alpha.5
[INFO] [stderr]   Downloaded libflate_lz77 v1.1.0
[INFO] [stderr]   Downloaded tracing-attributes v0.1.19
[INFO] [stderr]   Downloaded devise_core v0.3.1
[INFO] [stderr]   Downloaded simple-mutex v1.1.5
[INFO] [stderr]   Downloaded pear_codegen v0.2.3
[INFO] [stderr]   Downloaded anyhow v1.0.54
[INFO] [stderr]   Downloaded ref-cast-impl v1.0.6
[INFO] [stderr]   Downloaded devise_codegen v0.3.1
[INFO] [stderr]   Downloaded async-process v1.3.0
[INFO] [stderr]   Downloaded gloo-timers v0.2.3
[INFO] [stderr]   Downloaded atomic v0.5.1
[INFO] [stderr]   Downloaded local-channel v0.1.2
[INFO] [stderr]   Downloaded pear v0.2.3
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.29
[INFO] [stderr]   Downloaded blocking v1.1.0
[INFO] [stderr]   Downloaded http-client v6.5.1
[INFO] [stderr]   Downloaded signal-hook v0.3.13
[INFO] [stderr]   Downloaded nom8 v0.2.0
[INFO] [stderr]   Downloaded encoding_rs v0.8.30
[INFO] [stderr]   Downloaded include-flate v0.1.4
[INFO] [stderr]   Downloaded femme v2.1.1
[INFO] [stderr]   Downloaded tracing-subscriber v0.3.9
[INFO] [stderr]   Downloaded rocket v0.5.0-rc.2
[INFO] [stderr]   Downloaded actix-http v3.3.0
[INFO] [stderr]   Downloaded actix-web v4.3.0
[INFO] [stderr]   Downloaded loom v0.5.4
[INFO] [stderr]   Downloaded async-h1 v2.3.3
[INFO] [stderr]   Downloaded warp v0.3.2
[INFO] [stderr]   Downloaded tide v0.16.0
[INFO] [stderr]   Downloaded tokio-util v0.7.0
[INFO] [stderr]   Downloaded toml_edit v0.19.1
[INFO] [stderr]   Downloaded time v0.3.7
[INFO] [stderr]   Downloaded handlebars v4.3.3
[INFO] [stderr]   Downloaded rocket_codegen v0.5.0-rc.2
[INFO] [stderr]   Downloaded zstd-safe v6.0.3+zstd.1.5.2
[INFO] [stderr]   Downloaded actix-router v0.5.0
[INFO] [stderr]   Downloaded libflate v1.1.2
[INFO] [stderr]   Downloaded actix-rt v2.6.0
[INFO] [stderr]   Downloaded zstd v0.12.3+zstd.1.5.2
[INFO] [stderr]   Downloaded cookie v0.16.0
[INFO] [stderr]   Downloaded async-task v4.1.0
[INFO] [stderr]   Downloaded rocket_http v0.5.0-rc.2
[INFO] [stderr]   Downloaded uncased v0.9.6
[INFO] [stderr]   Downloaded sha1 v0.10.4
[INFO] [stderr]   Downloaded actix-utils v3.0.0
[INFO] [stderr]   Downloaded generator v0.7.0
[INFO] [stderr]   Downloaded toml v0.7.1
[INFO] [stderr]   Downloaded tokio-tungstenite v0.15.0
[INFO] [stderr]   Downloaded async-session v2.0.1
[INFO] [stderr]   Downloaded actix-codec v0.5.0
[INFO] [stderr]   Downloaded actix-server v2.0.0
[INFO] [stderr]   Downloaded semver v1.0.5
[INFO] [stderr]   Downloaded actix-macros v0.2.3
[INFO] [stderr]   Downloaded route-recognizer v0.2.0
[INFO] [stderr]   Downloaded async-sse v4.1.0
[INFO] [stderr]   Downloaded ref-cast v1.0.6
[INFO] [stderr]   Downloaded bytestring v1.0.0
[INFO] [stderr]   Downloaded local-waker v0.1.2
[INFO] [stderr]   Downloaded figment v0.10.6
[INFO] [stderr]   Downloaded async-dup v1.2.2
[INFO] [stderr]   Downloaded num_threads v0.1.3
[INFO] [stderr]   Downloaded ubyte v0.10.1
[INFO] [stderr]   Downloaded tungstenite v0.14.0
[INFO] [stderr]   Downloaded actix-web-codegen v4.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8cbd2821dd1ba9cda43110a87b99cf1026430371645181dba7c65b39144f1f02
[INFO] running `Command { std: "docker" "start" "-a" "8cbd2821dd1ba9cda43110a87b99cf1026430371645181dba7c65b39144f1f02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cbd2821dd1ba9cda43110a87b99cf1026430371645181dba7c65b39144f1f02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cbd2821dd1ba9cda43110a87b99cf1026430371645181dba7c65b39144f1f02", kill_on_drop: false }`
[INFO] [stdout] 8cbd2821dd1ba9cda43110a87b99cf1026430371645181dba7c65b39144f1f02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1c04e220df55a936ac0132a444f5b94d039e4e0e0f12a07a7a59a7799666180
[INFO] running `Command { std: "docker" "start" "-a" "d1c04e220df55a936ac0132a444f5b94d039e4e0e0f12a07a7a59a7799666180", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.8
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]     Checking sval v1.0.0-alpha.5
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.50/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tokio v1.25.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d1c04e220df55a936ac0132a444f5b94d039e4e0e0f12a07a7a59a7799666180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1c04e220df55a936ac0132a444f5b94d039e4e0e0f12a07a7a59a7799666180", kill_on_drop: false }`
[INFO] [stdout] d1c04e220df55a936ac0132a444f5b94d039e4e0e0f12a07a7a59a7799666180
