[INFO] fetching crate easymongo 0.1.1...
[INFO] testing easymongo-0.1.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate easymongo 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate easymongo 0.1.1
[INFO] finished tweaking crates.io crate easymongo 0.1.1
[INFO] tweaked toml for crates.io crate easymongo 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate easymongo 0.1.1 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 easymongo 0.1.1 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 wasm-bindgen-shared v0.2.85
[INFO] [stderr]   Downloaded rustc_version_runtime v0.2.1
[INFO] [stderr]   Downloaded take_mut v0.2.2
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.85
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.85
[INFO] [stderr]   Downloaded serde_with_macros v1.5.2
[INFO] [stderr]   Downloaded typed-builder v0.10.0
[INFO] [stderr]   Downloaded uuid v1.3.2
[INFO] [stderr]   Downloaded js-sys v0.3.62
[INFO] [stderr]   Downloaded bumpalo v3.12.2
[INFO] [stderr]   Downloaded serde_with v1.14.0
[INFO] [stderr]   Downloaded bson v2.6.1
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.85
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.85
[INFO] [stderr]   Downloaded enum-as-inner v0.4.0
[INFO] [stderr]   Downloaded trust-dns-proto v0.21.2
[INFO] [stderr]   Downloaded web-sys v0.3.62
[INFO] [stderr]   Downloaded tokio v1.28.1
[INFO] [stderr]   Downloaded trust-dns-resolver v0.21.2
[INFO] [stderr]   Downloaded mongodb v2.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 2c8d32ddd190a73108d2ecc70984da6daa98c98c113fb3fc7cf8bd2136ed1a03
[INFO] running `Command { std: "docker" "start" "-a" "2c8d32ddd190a73108d2ecc70984da6daa98c98c113fb3fc7cf8bd2136ed1a03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c8d32ddd190a73108d2ecc70984da6daa98c98c113fb3fc7cf8bd2136ed1a03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c8d32ddd190a73108d2ecc70984da6daa98c98c113fb3fc7cf8bd2136ed1a03", kill_on_drop: false }`
[INFO] [stdout] 2c8d32ddd190a73108d2ecc70984da6daa98c98c113fb3fc7cf8bd2136ed1a03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] dd174c4d8843b5b494648f6bbb95167f13ccc100ee759633fc6d15d9d8d88f28
[INFO] running `Command { std: "docker" "start" "-a" "dd174c4d8843b5b494648f6bbb95167f13ccc100ee759633fc6d15d9d8d88f28", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling serde_derive v1.0.162
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling serde v1.0.162
[INFO] [stderr]    Compiling tokio v1.28.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.22
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling unicode-bidi v0.3.13
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling futures-io v0.3.28
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling async-trait v0.1.68
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling idna v0.3.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling match_cfg v0.1.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/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]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling form_urlencoded v1.1.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling digest v0.10.6
[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" "dd174c4d8843b5b494648f6bbb95167f13ccc100ee759633fc6d15d9d8d88f28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd174c4d8843b5b494648f6bbb95167f13ccc100ee759633fc6d15d9d8d88f28", kill_on_drop: false }`
[INFO] [stdout] dd174c4d8843b5b494648f6bbb95167f13ccc100ee759633fc6d15d9d8d88f28