[INFO] cloning repository https://github.com/svg-rs/RustDropper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/svg-rs/RustDropper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsvg-rs%2FRustDropper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsvg-rs%2FRustDropper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 60733276492f4618f6dae443132599c9c9ba057d
[INFO] checking svg-rs/RustDropper/60733276492f4618f6dae443132599c9c9ba057d against master#9f32ccf35fb877270bc44a86a126440f04d676d0 for pr-140283
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsvg-rs%2FRustDropper" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/svg-rs/RustDropper
[INFO] finished tweaking git repo https://github.com/svg-rs/RustDropper
[INFO] tweaked toml for git repo https://github.com/svg-rs/RustDropper written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/svg-rs/RustDropper on toolchain 9f32ccf35fb877270bc44a86a126440f04d676d0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f32ccf35fb877270bc44a86a126440f04d676d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/svg-rs/RustDropper 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" "+9f32ccf35fb877270bc44a86a126440f04d676d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] [stderr]       Adding embed-resource v1.8.0 (available: v3.0.6)
[INFO] [stderr]       Adding rustc_version v0.4.1
[INFO] [stderr]       Adding semver v1.0.27
[INFO] [stderr]       Adding toml v0.5.11
[INFO] [stderr]       Adding vswhom v0.1.0
[INFO] [stderr]       Adding vswhom-sys v0.1.3
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded whoami v1.2.3
[INFO] [stderr]   Downloaded typemap_rev v0.1.5
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.80
[INFO] [stderr]   Downloaded serde_derive v1.0.145
[INFO] [stderr]   Downloaded link-cplusplus v1.0.7
[INFO] [stderr]   Downloaded downloader v0.2.6
[INFO] [stderr]   Downloaded thiserror-impl v1.0.37
[INFO] [stderr]   Downloaded thiserror v1.0.37
[INFO] [stderr]   Downloaded moisture v0.1.0
[INFO] [stderr]   Downloaded sha-1 v0.10.0
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.80
[INFO] [stderr]   Downloaded cxx-build v1.0.80
[INFO] [stderr]   Downloaded time v0.3.16
[INFO] [stderr]   Downloaded serde v1.0.145
[INFO] [stderr]   Downloaded flate2 v1.0.24
[INFO] [stderr]   Downloaded openssl-sys v0.9.76
[INFO] [stderr]   Downloaded reqwest v0.11.12
[INFO] [stderr]   Downloaded cxx v1.0.80
[INFO] [stderr]   Downloaded serde_json v1.0.87
[INFO] [stderr]   Downloaded openssl v0.10.42
[INFO] [stderr]   Downloaded async-tungstenite v0.17.2
[INFO] [stderr]   Downloaded rustls v0.20.7
[INFO] [stderr]   Downloaded webpki-roots v0.22.5
[INFO] [stderr]   Downloaded syn v1.0.102
[INFO] [stderr]   Downloaded command_attr v0.4.1
[INFO] [stderr]   Downloaded miniz_oxide v0.5.4
[INFO] [stderr]   Downloaded hyper-rustls v0.23.0
[INFO] [stderr]   Downloaded goldberg v0.1.0
[INFO] [stderr]   Downloaded async-trait v0.1.58
[INFO] [stderr]   Downloaded parking_lot_core v0.9.4
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.1
[INFO] [stderr]   Downloaded once_cell v1.15.0
[INFO] [stderr]   Downloaded scratch v1.0.2
[INFO] [stderr]   Downloaded serenity v0.11.5
[INFO] [stderr]   Downloaded tokio v1.21.2
[INFO] [stderr]   Downloaded time-macros v0.2.5
[INFO] [stderr]   Downloaded libc v0.2.134
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+9f32ccf35fb877270bc44a86a126440f04d676d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45edeb0b6d3d6ae41c4c5af6bbb5fc376704260724647a68580577ab57ef1e2b
[INFO] running `Command { std: "docker" "start" "-a" "45edeb0b6d3d6ae41c4c5af6bbb5fc376704260724647a68580577ab57ef1e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45edeb0b6d3d6ae41c4c5af6bbb5fc376704260724647a68580577ab57ef1e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45edeb0b6d3d6ae41c4c5af6bbb5fc376704260724647a68580577ab57ef1e2b", kill_on_drop: false }`
[INFO] [stdout] 45edeb0b6d3d6ae41c4c5af6bbb5fc376704260724647a68580577ab57ef1e2b
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+9f32ccf35fb877270bc44a86a126440f04d676d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c6a69042b22e408d63f2a4b4183659fad7d0bd2de21e5777f5105f35e877a98
[INFO] running `Command { std: "docker" "start" "-a" "8c6a69042b22e408d63f2a4b4183659fad7d0bd2de21e5777f5105f35e877a98", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]     Checking slab v0.4.7
[INFO] [stderr]     Checking futures-task v0.3.25
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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 http v0.2.8
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8c6a69042b22e408d63f2a4b4183659fad7d0bd2de21e5777f5105f35e877a98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c6a69042b22e408d63f2a4b4183659fad7d0bd2de21e5777f5105f35e877a98", kill_on_drop: false }`
[INFO] [stdout] 8c6a69042b22e408d63f2a4b4183659fad7d0bd2de21e5777f5105f35e877a98