[INFO] cloning repository https://github.com/mashedcode/proc-macro2-whitespace
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mashedcode/proc-macro2-whitespace" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmashedcode%2Fproc-macro2-whitespace", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmashedcode%2Fproc-macro2-whitespace'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f934294f40fe4e749077e2e14d8731b1f05f60e
[INFO] checking mashedcode/proc-macro2-whitespace against master#96cfc75584359ae7ad11cc45968059f29e7b44b7 for pr-137728
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmashedcode%2Fproc-macro2-whitespace" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mashedcode/proc-macro2-whitespace on toolchain 96cfc75584359ae7ad11cc45968059f29e7b44b7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+96cfc75584359ae7ad11cc45968059f29e7b44b7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/mashedcode/proc-macro2-whitespace
[INFO] finished tweaking git repo https://github.com/mashedcode/proc-macro2-whitespace
[INFO] tweaked toml for git repo https://github.com/mashedcode/proc-macro2-whitespace written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mashedcode/proc-macro2-whitespace 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" "+96cfc75584359ae7ad11cc45968059f29e7b44b7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/rustfmt`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v671.0.0
[INFO] [stderr]   Downloaded rustc-workspace-hack v1.0.0
[INFO] [stderr]   Downloaded rustc-rayon-core v0.3.0
[INFO] [stderr]   Downloaded psm v0.1.11
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v671.0.0
[INFO] [stderr]   Downloaded termize v0.1.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_attr v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_expand v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v671.0.0
[INFO] [stderr]   Downloaded rustc-rayon v0.3.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_session v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v671.0.0
[INFO] [stderr]   Downloaded annotate-snippets v0.8.0
[INFO] [stderr]   Downloaded measureme v0.7.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v671.0.0
[INFO] [stderr]   Downloaded stacker v0.1.11
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_passes v671.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v671.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+96cfc75584359ae7ad11cc45968059f29e7b44b7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 774f161beab2eae2225f41251b11cf56bc4303900a9868539bac66b3203a4218
[INFO] running `Command { std: "docker" "start" "-a" "774f161beab2eae2225f41251b11cf56bc4303900a9868539bac66b3203a4218", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "774f161beab2eae2225f41251b11cf56bc4303900a9868539bac66b3203a4218", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "774f161beab2eae2225f41251b11cf56bc4303900a9868539bac66b3203a4218", kill_on_drop: false }`
[INFO] [stdout] 774f161beab2eae2225f41251b11cf56bc4303900a9868539bac66b3203a4218
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+96cfc75584359ae7ad11cc45968059f29e7b44b7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48495c2e9dc0a735ac224aa11535e7fb579357ffa1d0aec78dd4d432e720afd4
[INFO] running `Command { std: "docker" "start" "-a" "48495c2e9dc0a735ac224aa11535e7fb579357ffa1d0aec78dd4d432e720afd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.0
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/smallvec-1.4.2/src/lib.rs:74:40
[INFO] [stdout]    |
[INFO] [stdout] 74 | #![cfg_attr(feature = "union", feature(untagged_unions))]
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: unions with `Copy` and `ManuallyDrop` fields are stable; there is no intent to stabilize more
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lock_api-0.3.4/src/lib.rs:91:42
[INFO] [stdout]    |
[INFO] [stdout] 91 | #![cfg_attr(feature = "nightly", feature(const_fn))]
[INFO] [stdout]    |                                          ^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stdout] error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/smallvec-1.4.2/src/lib.rs:348:5
[INFO] [stdout]     |
[INFO] [stdout] 348 |     inline: MaybeUninit<A>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>`
[INFO] [stdout] help: wrap the field type in `ManuallyDrop<...>`
[INFO] [stdout]     |
[INFO] [stdout] 348 |     inline: std::mem::ManuallyDrop<MaybeUninit<A>>,
[INFO] [stdout]     |             +++++++++++++++++++++++              +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stdout] Some errors have detailed explanations: E0557, E0740.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smallvec` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lock_api` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "48495c2e9dc0a735ac224aa11535e7fb579357ffa1d0aec78dd4d432e720afd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48495c2e9dc0a735ac224aa11535e7fb579357ffa1d0aec78dd4d432e720afd4", kill_on_drop: false }`
[INFO] [stdout] 48495c2e9dc0a735ac224aa11535e7fb579357ffa1d0aec78dd4d432e720afd4