[INFO] fetching crate tps_minicbor 0.5.1...
[INFO] testing tps_minicbor-0.5.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate tps_minicbor 0.5.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate tps_minicbor 0.5.1
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate tps_minicbor 0.5.1
[INFO] tweaked toml for crates.io crate tps_minicbor 0.5.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tps_minicbor 0.5.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tps_minicbor 0.5.1 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded elliptic-curve v0.12.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.54
[INFO] [stderr]   Downloaded p256 v0.11.1
[INFO] [stderr]   Downloaded group v0.12.1
[INFO] [stderr]   Downloaded crypto-bigint v0.4.9
[INFO] [stderr]   Downloaded const-oid v0.9.2
[INFO] [stderr]   Downloaded rfc6979 v0.3.1
[INFO] [stderr]   Downloaded sec1 v0.3.0
[INFO] [stderr]   Downloaded ff v0.12.1
[INFO] [stderr]   Downloaded func_trace v1.0.3
[INFO] [stderr]   Downloaded syn v2.0.11
[INFO] [stderr]   Downloaded ecdsa v0.14.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f45c2fe175fd2ec8edbe24ddd021f9aa522d9117436953ae9ab80cfec981a5a6
[INFO] running `Command { std: "docker" "start" "-a" "f45c2fe175fd2ec8edbe24ddd021f9aa522d9117436953ae9ab80cfec981a5a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f45c2fe175fd2ec8edbe24ddd021f9aa522d9117436953ae9ab80cfec981a5a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f45c2fe175fd2ec8edbe24ddd021f9aa522d9117436953ae9ab80cfec981a5a6", kill_on_drop: false }`
[INFO] [stdout] f45c2fe175fd2ec8edbe24ddd021f9aa522d9117436953ae9ab80cfec981a5a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fbbde72ac9a83e807fd9016c4c45badfb61ec6b5f3f5be1f9844db85c497d0d
[INFO] running `Command { std: "docker" "start" "-a" "7fbbde72ac9a83e807fd9016c4c45badfb61ec6b5f3f5be1f9844db85c497d0d", kill_on_drop: false }`
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling zeroize v1.6.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.54
[INFO] [stderr]    Compiling const-oid v0.9.2
[INFO] [stderr]    Compiling base64ct v1.6.0
[INFO] [stderr]    Compiling base16ct v0.1.1
[INFO] [stderr]    Compiling cpufeatures v0.2.6
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling half v2.2.1
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling digest v0.10.6
[INFO] [stderr]    Compiling der v0.6.1
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling sha2 v0.10.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.54/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] [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" "7fbbde72ac9a83e807fd9016c4c45badfb61ec6b5f3f5be1f9844db85c497d0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fbbde72ac9a83e807fd9016c4c45badfb61ec6b5f3f5be1f9844db85c497d0d", kill_on_drop: false }`
[INFO] [stdout] 7fbbde72ac9a83e807fd9016c4c45badfb61ec6b5f3f5be1f9844db85c497d0d
