[INFO] cloning repository https://github.com/chetanc97/rust-chat-app
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chetanc97/rust-chat-app" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchetanc97%2Frust-chat-app", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchetanc97%2Frust-chat-app'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7410f7688e10a6b07cc2fbc879e4b6260e70674d
[INFO] checking chetanc97/rust-chat-app against f1c52bf13c990fc425c542cc90a0396a87db24ba for pr-164812
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchetanc97%2Frust-chat-app" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
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[INFO] started tweaking git repo https://github.com/chetanc97/rust-chat-app
[INFO] finished tweaking git repo https://github.com/chetanc97/rust-chat-app
[INFO] tweaked toml for git repo https://github.com/chetanc97/rust-chat-app written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chetanc97/rust-chat-app on toolchain f1c52bf13c990fc425c542cc90a0396a87db24ba
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f1c52bf13c990fc425c542cc90a0396a87db24ba" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chetanc97/rust-chat-app 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" "+f1c52bf13c990fc425c542cc90a0396a87db24ba" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f21625c5c8e9299b9f3b7012db89babd731e49be3ada6a8713608f6bd6a58f35
[INFO] running `Command { std: "docker" "start" "f21625c5c8e9299b9f3b7012db89babd731e49be3ada6a8713608f6bd6a58f35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f21625c5c8e9299b9f3b7012db89babd731e49be3ada6a8713608f6bd6a58f35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f21625c5c8e9299b9f3b7012db89babd731e49be3ada6a8713608f6bd6a58f35" "/opt/rustwide/cargo-home/bin/cargo" "+f1c52bf13c990fc425c542cc90a0396a87db24ba" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f21625c5c8e9299b9f3b7012db89babd731e49be3ada6a8713608f6bd6a58f35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f21625c5c8e9299b9f3b7012db89babd731e49be3ada6a8713608f6bd6a58f35" "/opt/rustwide/cargo-home/bin/cargo" "+f1c52bf13c990fc425c542cc90a0396a87db24ba" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.0
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling time-macros v0.2.8
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling cookie v0.17.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling ref-cast v1.0.16
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling tokio v1.27.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[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] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling uncased v0.9.7
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]    Compiling bitflags v2.1.0
[INFO] [stderr]    Compiling try-lock v0.2.4
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling rustix v0.37.11
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking smallvec v1.10.0
[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 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f21625c5c8e9299b9f3b7012db89babd731e49be3ada6a8713608f6bd6a58f35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f21625c5c8e9299b9f3b7012db89babd731e49be3ada6a8713608f6bd6a58f35", kill_on_drop: false }`
[INFO] [stdout] f21625c5c8e9299b9f3b7012db89babd731e49be3ada6a8713608f6bd6a58f35