[INFO] fetching crate mercy 2.0.0...
[INFO] checking mercy-2.0.0 against master#6162f6f12339aa81fe16b8a64644ead497e411b2 for pr-113240
[INFO] extracting crate mercy 2.0.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate mercy 2.0.0 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 mercy 2.0.0
[INFO] finished tweaking crates.io crate mercy 2.0.0
[INFO] tweaked toml for crates.io crate mercy 2.0.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate mercy 2.0.0 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 }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cipher v0.3.0
[INFO] [stderr]   Downloaded quote v1.0.27
[INFO] [stderr]   Downloaded zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]   Downloaded zstd v0.11.2+zstd.1.5.2
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[INFO] [stderr]   Downloaded zip v0.6.5
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[INFO] [stderr]   Downloaded crossbeam v0.8.2
[INFO] [stderr]   Downloaded web-sys v0.3.62
[INFO] [stderr]   Downloaded tokio v1.28.1
[INFO] [stderr]   Downloaded clap_builder v4.2.7
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[INFO] [stderr]   Downloaded proc-macro2 v1.0.56
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[INFO] [stderr]   Downloaded reqwest v0.11.17
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 5cc067ebb541ab940fd4c74ec30ce0840258fc8032040a2e010375b4721ce5f7
[INFO] running `Command { std: "docker" "start" "-a" "5cc067ebb541ab940fd4c74ec30ce0840258fc8032040a2e010375b4721ce5f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cc067ebb541ab940fd4c74ec30ce0840258fc8032040a2e010375b4721ce5f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cc067ebb541ab940fd4c74ec30ce0840258fc8032040a2e010375b4721ce5f7", kill_on_drop: false }`
[INFO] [stdout] 5cc067ebb541ab940fd4c74ec30ce0840258fc8032040a2e010375b4721ce5f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 35f2bd1a40ce621db17e0fa237023d7983c2426c87b54c399eb0417c9046d0d7
[INFO] running `Command { std: "docker" "start" "-a" "35f2bd1a40ce621db17e0fa237023d7983c2426c87b54c399eb0417c9046d0d7", 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 libc v0.2.144
[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 parking_lot_core v0.9.7
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.7
[INFO] [stderr]    Compiling tokio v1.28.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling regex-syntax v0.7.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling aho-corasick v1.0.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.56/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 futures-task v0.3.28
[INFO] [stderr]    Compiling signal-hook v0.3.15
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]    Compiling openssl v0.10.52
[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] 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" "35f2bd1a40ce621db17e0fa237023d7983c2426c87b54c399eb0417c9046d0d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35f2bd1a40ce621db17e0fa237023d7983c2426c87b54c399eb0417c9046d0d7", kill_on_drop: false }`
[INFO] [stdout] 35f2bd1a40ce621db17e0fa237023d7983c2426c87b54c399eb0417c9046d0d7