[INFO] fetching crate motivator 0.7.1...
[INFO] testing motivator-0.7.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate motivator 0.7.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate motivator 0.7.1
[INFO] finished tweaking crates.io crate motivator 0.7.1
[INFO] tweaked toml for crates.io crate motivator 0.7.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate motivator 0.7.1 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 motivator 0.7.1 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 quote v1.0.21
[INFO] [stderr]   Downloaded ryu v1.0.11
[INFO] [stderr]   Downloaded proc-macro2 v1.0.47
[INFO] [stderr]   Downloaded thread_local v1.1.4
[INFO] [stderr]   Downloaded doc-comment v0.3.3
[INFO] [stderr]   Downloaded wait-timeout v0.2.0
[INFO] [stderr]   Downloaded termtree v0.4.0
[INFO] [stderr]   Downloaded num-traits v0.2.15
[INFO] [stderr]   Downloaded globset v0.4.9
[INFO] [stderr]   Downloaded walkdir v2.3.2
[INFO] [stderr]   Downloaded assert_cmd v2.0.6
[INFO] [stderr]   Downloaded serde v1.0.147
[INFO] [stderr]   Downloaded aho-corasick v0.7.19
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.12
[INFO] [stderr]   Downloaded log v0.4.17
[INFO] [stderr]   Downloaded syn v1.0.103
[INFO] [stderr]   Downloaded memchr v2.5.0
[INFO] [stderr]   Downloaded ignore v0.4.18
[INFO] [stderr]   Downloaded clap v4.0.19
[INFO] [stderr]   Downloaded regex-syntax v0.6.27
[INFO] [stderr]   Downloaded clap_derive v4.0.18
[INFO] [stderr]   Downloaded getrandom v0.2.8
[INFO] [stderr]   Downloaded fastrand v1.8.0
[INFO] [stderr]   Downloaded bstr v0.2.17
[INFO] [stderr]   Downloaded regex v1.6.0
[INFO] [stderr]   Downloaded bstr v1.0.1
[INFO] [stderr]   Downloaded winapi-util v0.1.5
[INFO] [stderr]   Downloaded heck v0.4.0
[INFO] [stderr]   Downloaded either v1.8.0
[INFO] [stderr]   Downloaded serde_json v1.0.87
[INFO] [stderr]   Downloaded predicates-tree v1.0.6
[INFO] [stderr]   Downloaded clap_lex v0.3.0
[INFO] [stderr]   Downloaded once_cell v1.16.0
[INFO] [stderr]   Downloaded termcolor v1.1.3
[INFO] [stderr]   Downloaded predicates-core v1.0.4
[INFO] [stderr]   Downloaded assert_fs v1.0.8
[INFO] [stderr]   Downloaded os_str_bytes v6.3.1
[INFO] [stderr]   Downloaded predicates v2.1.2
[INFO] [stderr]   Downloaded unicode-ident v1.0.5
[INFO] [stderr]   Downloaded serde_derive v1.0.147
[INFO] [stderr]   Downloaded itoa v1.0.4
[INFO] [stderr]   Downloaded libc v0.2.137
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 0030459c426debeca1c86e95c6c2800ce79fd189afe3f0a906aa7d16706ab7f8
[INFO] running `Command { std: "docker" "start" "-a" "0030459c426debeca1c86e95c6c2800ce79fd189afe3f0a906aa7d16706ab7f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0030459c426debeca1c86e95c6c2800ce79fd189afe3f0a906aa7d16706ab7f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0030459c426debeca1c86e95c6c2800ce79fd189afe3f0a906aa7d16706ab7f8", kill_on_drop: false }`
[INFO] [stdout] 0030459c426debeca1c86e95c6c2800ce79fd189afe3f0a906aa7d16706ab7f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ef46339207d30d4913e8594e6ef287340b682012e2420a7348cc46f99aef989a
[INFO] running `Command { std: "docker" "start" "-a" "ef46339207d30d4913e8594e6ef287340b682012e2420a7348cc46f99aef989a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]    Compiling os_str_bytes v6.3.1
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling itoa v1.0.4
[INFO] [stderr]    Compiling clap_lex v0.3.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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 getrandom v0.2.8
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.6.4
[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" "ef46339207d30d4913e8594e6ef287340b682012e2420a7348cc46f99aef989a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef46339207d30d4913e8594e6ef287340b682012e2420a7348cc46f99aef989a", kill_on_drop: false }`
[INFO] [stdout] ef46339207d30d4913e8594e6ef287340b682012e2420a7348cc46f99aef989a