[INFO] fetching crate bread-scan 0.0.7...
[INFO] checking bread-scan-0.0.7 against master#6162f6f12339aa81fe16b8a64644ead497e411b2 for pr-113240
[INFO] extracting crate bread-scan 0.0.7 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate bread-scan 0.0.7 on toolchain 6162f6f12339aa81fe16b8a64644ead497e411b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bread-scan 0.0.7
[INFO] finished tweaking crates.io crate bread-scan 0.0.7
[INFO] tweaked toml for crates.io crate bread-scan 0.0.7 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate bread-scan 0.0.7 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" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8798b8310d18296d7b9705cf08ec3a32c1136c1d4e0a2236bc9d0429404cdc23
[INFO] running `Command { std: "docker" "start" "-a" "8798b8310d18296d7b9705cf08ec3a32c1136c1d4e0a2236bc9d0429404cdc23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8798b8310d18296d7b9705cf08ec3a32c1136c1d4e0a2236bc9d0429404cdc23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8798b8310d18296d7b9705cf08ec3a32c1136c1d4e0a2236bc9d0429404cdc23", kill_on_drop: false }`
[INFO] [stdout] 8798b8310d18296d7b9705cf08ec3a32c1136c1d4e0a2236bc9d0429404cdc23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57052e2f51d0818943355821ef875e0d7445c6978c6b5d2863c4b1be5036c8e1
[INFO] running `Command { std: "docker" "start" "-a" "57052e2f51d0818943355821ef875e0d7445c6978c6b5d2863c4b1be5036c8e1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]     Checking bytes v1.3.0
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling tokio v1.22.0
[INFO] [stderr]    Compiling cc v1.0.77
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.6
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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 phf_shared v0.10.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling io-lifetimes v1.0.3
[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" "57052e2f51d0818943355821ef875e0d7445c6978c6b5d2863c4b1be5036c8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57052e2f51d0818943355821ef875e0d7445c6978c6b5d2863c4b1be5036c8e1", kill_on_drop: false }`
[INFO] [stdout] 57052e2f51d0818943355821ef875e0d7445c6978c6b5d2863c4b1be5036c8e1