[INFO] fetching crate mmt 0.2.4...
[INFO] checking mmt-0.2.4 against nightly-2024-02-05 for check-cfg
[INFO] extracting crate mmt 0.2.4 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate mmt 0.2.4 on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mmt 0.2.4
[INFO] finished tweaking crates.io crate mmt 0.2.4
[INFO] tweaked toml for crates.io crate mmt 0.2.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate mmt 0.2.4 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" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mutate_once v0.1.1
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.84
[INFO] [stderr]   Downloaded quote v1.0.22
[INFO] [stderr]   Downloaded proc-macro2 v1.0.48
[INFO] [stderr]   Downloaded cxx-build v1.0.84
[INFO] [stderr]   Downloaded hashlink v0.8.1
[INFO] [stderr]   Downloaded kamadak-exif v0.5.5
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.84
[INFO] [stderr]   Downloaded rusqlite v0.28.0
[INFO] [stderr]   Downloaded cxx v1.0.84
[INFO] [stderr]   Downloaded syn v1.0.106
[INFO] [stderr]   Downloaded libsqlite3-sys v0.25.2
[INFO] [stderr]   Downloaded dev_util v0.1.1
[INFO] [stderr]   Downloaded is_copy v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9ac30869579469cb247a63715f1effa5047b2864a526b025b07416a56e74edb
[INFO] running `Command { std: "docker" "start" "-a" "c9ac30869579469cb247a63715f1effa5047b2864a526b025b07416a56e74edb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9ac30869579469cb247a63715f1effa5047b2864a526b025b07416a56e74edb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9ac30869579469cb247a63715f1effa5047b2864a526b025b07416a56e74edb", kill_on_drop: false }`
[INFO] [stdout] c9ac30869579469cb247a63715f1effa5047b2864a526b025b07416a56e74edb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aedc6ff3bb742c5102d9a57a165bbaa311434ac776e07b1f439ae150f165ff2e
[INFO] running `Command { std: "docker" "start" "-a" "aedc6ff3bb742c5102d9a57a165bbaa311434ac776e07b1f439ae150f165ff2e", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling proc-macro2 v1.0.48
[INFO] [stderr]    Compiling quote v1.0.22
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling syn v1.0.106
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling libsqlite3-sys v0.25.2
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking iana-time-zone v0.1.53
[INFO] [stderr]     Checking mutate_once v0.1.1
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.48/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 kamadak-exif v0.5.5
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking is_copy v0.1.5
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "aedc6ff3bb742c5102d9a57a165bbaa311434ac776e07b1f439ae150f165ff2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aedc6ff3bb742c5102d9a57a165bbaa311434ac776e07b1f439ae150f165ff2e", kill_on_drop: false }`
[INFO] [stdout] aedc6ff3bb742c5102d9a57a165bbaa311434ac776e07b1f439ae150f165ff2e
