[INFO] cloning repository https://github.com/CN-Zxcv/learn_tokio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CN-Zxcv/learn_tokio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCN-Zxcv%2Flearn_tokio", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCN-Zxcv%2Flearn_tokio'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ce311d09667236ed53c4cb0ca32e2e9d9fedd5c
[INFO] checking CN-Zxcv/learn_tokio against try#f70ee28831acc074c109afab32d287057c3eca46 for pr-149389
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCN-Zxcv%2Flearn_tokio" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/CN-Zxcv/learn_tokio
[INFO] finished tweaking git repo https://github.com/CN-Zxcv/learn_tokio
[INFO] tweaked toml for git repo https://github.com/CN-Zxcv/learn_tokio written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/CN-Zxcv/learn_tokio on toolchain f70ee28831acc074c109afab32d287057c3eca46
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/CN-Zxcv/learn_tokio 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" "+f70ee28831acc074c109afab32d287057c3eca46" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d28dbce592e22a2d99e9c39e0a29119930e98d8b00e3a6c6cb5197a048f34448
[INFO] running `Command { std: "docker" "start" "-a" "d28dbce592e22a2d99e9c39e0a29119930e98d8b00e3a6c6cb5197a048f34448", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d28dbce592e22a2d99e9c39e0a29119930e98d8b00e3a6c6cb5197a048f34448", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d28dbce592e22a2d99e9c39e0a29119930e98d8b00e3a6c6cb5197a048f34448", kill_on_drop: false }`
[INFO] [stdout] d28dbce592e22a2d99e9c39e0a29119930e98d8b00e3a6c6cb5197a048f34448
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+f70ee28831acc074c109afab32d287057c3eca46" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d967c664f2175d770f022c3280349d0517e1fbe630cd80f63fdd7923a580ce67
[INFO] running `Command { std: "docker" "start" "-a" "d967c664f2175d770f022c3280349d0517e1fbe630cd80f63fdd7923a580ce67", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking num-traits v0.2.15
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling tokio v1.28.1
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking regex-syntax v0.7.1
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap_lex v0.5.0
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking iana-time-zone v0.1.56
[INFO] [stderr]     Checking ciborium-io v0.2.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/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 v0.3.28
[INFO] [stderr]     Checking clap_builder v4.3.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking plotters-svg v0.3.3
[INFO] [stderr]     Checking ciborium-ll v0.2.1
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]    Compiling async-trait v0.1.68
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking tracing-log v0.1.3
[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" "d967c664f2175d770f022c3280349d0517e1fbe630cd80f63fdd7923a580ce67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d967c664f2175d770f022c3280349d0517e1fbe630cd80f63fdd7923a580ce67", kill_on_drop: false }`
[INFO] [stdout] d967c664f2175d770f022c3280349d0517e1fbe630cd80f63fdd7923a580ce67
