[INFO] fetching crate arpfloat 0.1.9...
[INFO] checking arpfloat-0.1.9 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate arpfloat 0.1.9 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate arpfloat 0.1.9 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arpfloat 0.1.9
[INFO] finished tweaking crates.io crate arpfloat 0.1.9
[INFO] tweaked toml for crates.io crate arpfloat 0.1.9 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate arpfloat 0.1.9 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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.14
[INFO] [stderr]   Downloaded ciborium v0.2.0
[INFO] [stderr]   Downloaded plotters-backend v0.3.4
[INFO] [stderr]   Downloaded ciborium-ll v0.2.0
[INFO] [stderr]   Downloaded ciborium-io v0.2.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.50
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.2
[INFO] [stderr]   Downloaded plotters-svg v0.3.3
[INFO] [stderr]   Downloaded serde v1.0.152
[INFO] [stderr]   Downloaded serde_derive v1.0.152
[INFO] [stderr]   Downloaded rayon-core v1.10.2
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.13
[INFO] [stderr]   Downloaded criterion v0.4.0
[INFO] [stderr]   Downloaded clap v3.2.23
[INFO] [stderr]   Downloaded rayon v1.6.1
[INFO] [stderr]   Downloaded serde_json v1.0.91
[INFO] [stderr]   Downloaded plotters v0.3.4
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57aaa338d85dea58b00f13ec3e2ad2083cdde7836ef3c22b116a24d303d53bcf
[INFO] running `Command { std: "docker" "start" "-a" "57aaa338d85dea58b00f13ec3e2ad2083cdde7836ef3c22b116a24d303d53bcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57aaa338d85dea58b00f13ec3e2ad2083cdde7836ef3c22b116a24d303d53bcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57aaa338d85dea58b00f13ec3e2ad2083cdde7836ef3c22b116a24d303d53bcf", kill_on_drop: false }`
[INFO] [stdout] 57aaa338d85dea58b00f13ec3e2ad2083cdde7836ef3c22b116a24d303d53bcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 802c6fd8d397ef1e835adcc82496dcdc469cde8774940b1b160752fa343c581d
[INFO] running `Command { std: "docker" "start" "-a" "802c6fd8d397ef1e835adcc82496dcdc469cde8774940b1b160752fa343c581d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]    Compiling rayon-core v1.10.2
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stderr]     Checking ciborium-io v0.2.0
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking ciborium-ll v0.2.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]     Checking plotters-svg v0.3.3
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking arpfloat v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.50/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]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stdout] error: aborting due to 1 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" "802c6fd8d397ef1e835adcc82496dcdc469cde8774940b1b160752fa343c581d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "802c6fd8d397ef1e835adcc82496dcdc469cde8774940b1b160752fa343c581d", kill_on_drop: false }`
[INFO] [stdout] 802c6fd8d397ef1e835adcc82496dcdc469cde8774940b1b160752fa343c581d
[INFO] checking arpfloat-0.1.9 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] extracting crate arpfloat 0.1.9 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate arpfloat 0.1.9 on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arpfloat 0.1.9
[INFO] finished tweaking crates.io crate arpfloat 0.1.9
[INFO] tweaked toml for crates.io crate arpfloat 0.1.9 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate arpfloat 0.1.9 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7051d5083c4c5c25cb77b1bcf264c9c0a873c9566e846a87fddbd63bb5f6f20
[INFO] running `Command { std: "docker" "start" "-a" "f7051d5083c4c5c25cb77b1bcf264c9c0a873c9566e846a87fddbd63bb5f6f20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7051d5083c4c5c25cb77b1bcf264c9c0a873c9566e846a87fddbd63bb5f6f20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7051d5083c4c5c25cb77b1bcf264c9c0a873c9566e846a87fddbd63bb5f6f20", kill_on_drop: false }`
[INFO] [stdout] f7051d5083c4c5c25cb77b1bcf264c9c0a873c9566e846a87fddbd63bb5f6f20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d9b2fc1c545fc23f1affac8cfd4733d471fceb681f5ea2958b33fb19ddd898e
[INFO] running `Command { std: "docker" "start" "-a" "8d9b2fc1c545fc23f1affac8cfd4733d471fceb681f5ea2958b33fb19ddd898e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde_json v1.0.91
[INFO] [stderr]    Compiling rayon-core v1.10.2
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]     Checking ciborium-io v0.2.0
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking plotters-svg v0.3.3
[INFO] [stderr]     Checking arpfloat v0.1.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking ciborium-ll v0.2.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.50/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]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stdout] error: aborting due to 1 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" "8d9b2fc1c545fc23f1affac8cfd4733d471fceb681f5ea2958b33fb19ddd898e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d9b2fc1c545fc23f1affac8cfd4733d471fceb681f5ea2958b33fb19ddd898e", kill_on_drop: false }`
[INFO] [stdout] 8d9b2fc1c545fc23f1affac8cfd4733d471fceb681f5ea2958b33fb19ddd898e
