[INFO] cloning repository https://github.com/sgmenda/offset-cookbook-mode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sgmenda/offset-cookbook-mode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgmenda%2Foffset-cookbook-mode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgmenda%2Foffset-cookbook-mode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32dc0bef3fbdf0d6ba8c8a062f99428ef7691d60
[INFO] testing sgmenda/offset-cookbook-mode against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgmenda%2Foffset-cookbook-mode" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/sgmenda/offset-cookbook-mode
[INFO] finished tweaking git repo https://github.com/sgmenda/offset-cookbook-mode
[INFO] tweaked toml for git repo https://github.com/sgmenda/offset-cookbook-mode written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sgmenda/offset-cookbook-mode on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sgmenda/offset-cookbook-mode 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "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 hex-literal v0.3.4
[INFO] [stderr]   Downloaded rayon-core v1.10.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b48ad1b2ab92143aa4dcfa85c33ef7cbb76125ead0ee91be1885ad395009d68
[INFO] running `Command { std: "docker" "start" "-a" "3b48ad1b2ab92143aa4dcfa85c33ef7cbb76125ead0ee91be1885ad395009d68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b48ad1b2ab92143aa4dcfa85c33ef7cbb76125ead0ee91be1885ad395009d68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b48ad1b2ab92143aa4dcfa85c33ef7cbb76125ead0ee91be1885ad395009d68", kill_on_drop: false }`
[INFO] [stdout] 3b48ad1b2ab92143aa4dcfa85c33ef7cbb76125ead0ee91be1885ad395009d68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 830283fee56a1b81c37c96343f2b01452c95fc12ccb3afde2496b498f22b030d
[INFO] running `Command { std: "docker" "start" "-a" "830283fee56a1b81c37c96343f2b01452c95fc12ccb3afde2496b498f22b030d", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling zeroize v1.5.7
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling inout v0.1.3
[INFO] [stderr]    Compiling block-buffer v0.10.3
[INFO] [stderr]    Compiling cipher v0.4.3
[INFO] [stderr]    Compiling aead v0.5.1
[INFO] [stderr]    Compiling digest v0.10.6
[INFO] [stderr]    Compiling blake2 v0.10.6
[INFO] [stderr]    Compiling aes v0.8.2
[INFO] [stderr]    Compiling offset-cookbook-mode v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `avx512vaes`
[INFO] [stdout]    --> src/ocb3.rs:215:19
[INFO] [stdout]     |
[INFO] [stdout] 215 |         #[cfg(not(target_feature = "avx512vaes"))]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^------------
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    help: there is a expected value with a similar name: `"avx512vnni"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `target_feature` are: `10e60`, `2e3`, `32s`, `3e3r1`, `3e3r2`, `3e3r3`, `3e7`, `7e10`, `a`, `aclass`, `adx`, `aes`, `altivec`, `alu32`, `amx-avx512`, `amx-bf16`, `amx-complex`, `amx-fp16`, `amx-fp8`, `amx-int8`, `amx-movrs`, `amx-tf32`, `amx-tile`, `apxf`, `atomics`, `avx`, `avx10.1`, `avx10.2`, `avx2`, `avx512bf16`, `avx512bitalg`, `avx512bw`, `avx512cd`, `avx512dq`, and `avx512f` and 428 more
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `avx512vaes`
[INFO] [stdout]    --> src/ocb3.rs:217:19
[INFO] [stdout]     |
[INFO] [stdout] 217 |         #[cfg(not(target_feature = "avx512vaes"))]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^------------
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    help: there is a expected value with a similar name: `"avx512vnni"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `target_feature` are: `10e60`, `2e3`, `32s`, `3e3r1`, `3e3r2`, `3e3r3`, `3e7`, `7e10`, `a`, `aclass`, `adx`, `aes`, `altivec`, `alu32`, `amx-avx512`, `amx-bf16`, `amx-complex`, `amx-fp16`, `amx-fp8`, `amx-int8`, `amx-movrs`, `amx-tf32`, `amx-tile`, `apxf`, `atomics`, `avx`, `avx10.1`, `avx10.2`, `avx2`, `avx512bf16`, `avx512bitalg`, `avx512bw`, `avx512cd`, `avx512dq`, and `avx512f` and 428 more
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `avx512vaes`
[INFO] [stdout]    --> src/ocb3.rs:220:15
[INFO] [stdout]     |
[INFO] [stdout] 220 |         #[cfg(target_feature = "avx512vaes")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^------------
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: there is a expected value with a similar name: `"avx512vnni"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `target_feature` are: `10e60`, `2e3`, `32s`, `3e3r1`, `3e3r2`, `3e3r3`, `3e7`, `7e10`, `a`, `aclass`, `adx`, `aes`, `altivec`, `alu32`, `amx-avx512`, `amx-bf16`, `amx-complex`, `amx-fp16`, `amx-fp8`, `amx-int8`, `amx-movrs`, `amx-tf32`, `amx-tile`, `apxf`, `atomics`, `avx`, `avx10.1`, `avx10.2`, `avx2`, `avx512bf16`, `avx512bitalg`, `avx512bw`, `avx512cd`, `avx512dq`, and `avx512f` and 428 more
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `avx512vaes`
[INFO] [stdout]    --> src/ocb3.rs:222:15
[INFO] [stdout]     |
[INFO] [stdout] 222 |         #[cfg(target_feature = "avx512vaes")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^------------
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: there is a expected value with a similar name: `"avx512vnni"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `target_feature` are: `10e60`, `2e3`, `32s`, `3e3r1`, `3e3r2`, `3e3r3`, `3e7`, `7e10`, `a`, `aclass`, `adx`, `aes`, `altivec`, `alu32`, `amx-avx512`, `amx-bf16`, `amx-complex`, `amx-fp16`, `amx-fp8`, `amx-int8`, `amx-movrs`, `amx-tf32`, `amx-tile`, `apxf`, `atomics`, `avx`, `avx10.1`, `avx10.2`, `avx2`, `avx512bf16`, `avx512bitalg`, `avx512bw`, `avx512cd`, `avx512dq`, and `avx512f` and 428 more
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `avx512vaes`
[INFO] [stdout]    --> src/ocb3.rs:268:19
[INFO] [stdout]     |
[INFO] [stdout] 268 |         #[cfg(not(target_feature = "avx512vaes"))]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^------------
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    help: there is a expected value with a similar name: `"avx512vnni"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `target_feature` are: `10e60`, `2e3`, `32s`, `3e3r1`, `3e3r2`, `3e3r3`, `3e7`, `7e10`, `a`, `aclass`, `adx`, `aes`, `altivec`, `alu32`, `amx-avx512`, `amx-bf16`, `amx-complex`, `amx-fp16`, `amx-fp8`, `amx-int8`, `amx-movrs`, `amx-tf32`, `amx-tile`, `apxf`, `atomics`, `avx`, `avx10.1`, `avx10.2`, `avx2`, `avx512bf16`, `avx512bitalg`, `avx512bw`, `avx512cd`, `avx512dq`, and `avx512f` and 428 more
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `avx512vaes`
[INFO] [stdout]    --> src/ocb3.rs:270:19
[INFO] [stdout]     |
[INFO] [stdout] 270 |         #[cfg(not(target_feature = "avx512vaes"))]
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^------------
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    help: there is a expected value with a similar name: `"avx512vnni"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `target_feature` are: `10e60`, `2e3`, `32s`, `3e3r1`, `3e3r2`, `3e3r3`, `3e7`, `7e10`, `a`, `aclass`, `adx`, `aes`, `altivec`, `alu32`, `amx-avx512`, `amx-bf16`, `amx-complex`, `amx-fp16`, `amx-fp8`, `amx-int8`, `amx-movrs`, `amx-tf32`, `amx-tile`, `apxf`, `atomics`, `avx`, `avx10.1`, `avx10.2`, `avx2`, `avx512bf16`, `avx512bitalg`, `avx512bw`, `avx512cd`, `avx512dq`, and `avx512f` and 428 more
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `avx512vaes`
[INFO] [stdout]    --> src/ocb3.rs:273:15
[INFO] [stdout]     |
[INFO] [stdout] 273 |         #[cfg(target_feature = "avx512vaes")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^------------
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: there is a expected value with a similar name: `"avx512vnni"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `target_feature` are: `10e60`, `2e3`, `32s`, `3e3r1`, `3e3r2`, `3e3r3`, `3e7`, `7e10`, `a`, `aclass`, `adx`, `aes`, `altivec`, `alu32`, `amx-avx512`, `amx-bf16`, `amx-complex`, `amx-fp16`, `amx-fp8`, `amx-int8`, `amx-movrs`, `amx-tf32`, `amx-tile`, `apxf`, `atomics`, `avx`, `avx10.1`, `avx10.2`, `avx2`, `avx512bf16`, `avx512bitalg`, `avx512bw`, `avx512cd`, `avx512dq`, and `avx512f` and 428 more
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `avx512vaes`
[INFO] [stdout]    --> src/ocb3.rs:275:15
[INFO] [stdout]     |
[INFO] [stdout] 275 |         #[cfg(target_feature = "avx512vaes")]
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^------------
[INFO] [stdout]     |                                |
[INFO] [stdout]     |                                help: there is a expected value with a similar name: `"avx512vnni"`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected values for `target_feature` are: `10e60`, `2e3`, `32s`, `3e3r1`, `3e3r2`, `3e3r3`, `3e7`, `7e10`, `a`, `aclass`, `adx`, `aes`, `altivec`, `alu32`, `amx-avx512`, `amx-bf16`, `amx-complex`, `amx-fp16`, `amx-fp8`, `amx-int8`, `amx-movrs`, `amx-tf32`, `amx-tile`, `apxf`, `atomics`, `avx`, `avx10.1`, `avx10.2`, `avx2`, `avx512bf16`, `avx512bitalg`, `avx512bw`, `avx512cd`, `avx512dq`, and `avx512f` and 428 more
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `Command { std: "docker" "inspect" "830283fee56a1b81c37c96343f2b01452c95fc12ccb3afde2496b498f22b030d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "830283fee56a1b81c37c96343f2b01452c95fc12ccb3afde2496b498f22b030d", kill_on_drop: false }`
[INFO] [stdout] 830283fee56a1b81c37c96343f2b01452c95fc12ccb3afde2496b498f22b030d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6094886099a54b0e1a60e148bb79ae6c4b3da54b7dcf204f9840a2a300cdc414
[INFO] running `Command { std: "docker" "start" "-a" "6094886099a54b0e1a60e148bb79ae6c4b3da54b7dcf204f9840a2a300cdc414", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling plotters-backend v0.3.4
[INFO] [stderr]    Compiling ryu v1.0.12
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling os_str_bytes v6.4.1
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]    Compiling itoa v1.0.5
[INFO] [stderr]    Compiling ciborium-io v0.2.0
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling clap_lex v0.2.4
[INFO] [stderr]    Compiling plotters-svg v0.3.3
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling textwrap v0.16.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.50/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]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling cipher v0.4.3
[INFO] [stderr]    Compiling universal-hash v0.5.0
[INFO] [stderr]    Compiling ciborium-ll v0.2.0
[INFO] [stderr]    Compiling polyval v0.6.0
[INFO] [stderr]    Compiling aead v0.5.1
[INFO] [stderr]    Compiling digest v0.10.6
[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 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6094886099a54b0e1a60e148bb79ae6c4b3da54b7dcf204f9840a2a300cdc414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6094886099a54b0e1a60e148bb79ae6c4b3da54b7dcf204f9840a2a300cdc414", kill_on_drop: false }`
[INFO] [stdout] 6094886099a54b0e1a60e148bb79ae6c4b3da54b7dcf204f9840a2a300cdc414
