[INFO] fetching crate lrn 0.2.0...
[INFO] testing lrn-0.2.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate lrn 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate lrn 0.2.0
[INFO] finished tweaking crates.io crate lrn 0.2.0
[INFO] tweaked toml for crates.io crate lrn 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lrn 0.2.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lrn 0.2.0 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getrandom v0.2.8
[INFO] [stderr]   Downloaded thiserror-impl v1.0.37
[INFO] [stderr]   Downloaded futures-io v0.3.25
[INFO] [stderr]   Downloaded ipnet v2.5.1
[INFO] [stderr]   Downloaded thiserror v1.0.37
[INFO] [stderr]   Downloaded clap_derive v4.0.18
[INFO] [stderr]   Downloaded linked-hash-map v0.5.6
[INFO] [stderr]   Downloaded pkg-config v0.3.26
[INFO] [stderr]   Downloaded termcolor v1.1.3
[INFO] [stderr]   Downloaded async-trait v0.1.58
[INFO] [stderr]   Downloaded clap v4.0.19
[INFO] [stderr]   Downloaded os_str_bytes v6.3.1
[INFO] [stderr]   Downloaded widestring v0.5.1
[INFO] [stderr]   Downloaded email_address v0.2.4
[INFO] [stderr]   Downloaded quoted_printable v0.4.5
[INFO] [stderr]   Downloaded winreg v0.7.0
[INFO] [stderr]   Downloaded lru-cache v0.1.2
[INFO] [stderr]   Downloaded dbus v0.9.7
[INFO] [stderr]   Downloaded hostname v0.3.1
[INFO] [stderr]   Downloaded data-encoding v2.3.2
[INFO] [stderr]   Downloaded heck v0.4.0
[INFO] [stderr]   Downloaded matches v0.1.9
[INFO] [stderr]   Downloaded ipconfig v0.3.0
[INFO] [stderr]   Downloaded match_cfg v0.1.0
[INFO] [stderr]   Downloaded idna v0.2.3
[INFO] [stderr]   Downloaded clap_lex v0.3.0
[INFO] [stderr]   Downloaded cc v1.0.76
[INFO] [stderr]   Downloaded resolv-conf v0.7.0
[INFO] [stderr]   Downloaded nom v7.1.1
[INFO] [stderr]   Downloaded parking_lot_core v0.9.4
[INFO] [stderr]   Downloaded enum-as-inner v0.5.1
[INFO] [stderr]   Downloaded tracing-attributes v0.1.23
[INFO] [stderr]   Downloaded trust-dns-proto v0.22.0
[INFO] [stderr]   Downloaded email-encoding v0.1.3
[INFO] [stderr]   Downloaded lettre v0.10.1
[INFO] [stderr]   Downloaded num_cpus v1.14.0
[INFO] [stderr]   Downloaded trust-dns-resolver v0.22.0
[INFO] [stderr]   Downloaded ulid v1.0.0
[INFO] [stderr]   Downloaded once_cell v1.16.0
[INFO] [stderr]   Downloaded libdbus-sys v0.2.5
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f60e18354e1ec5094b95c333f404ff98023fcca8c7a72cb76dd532837d4a940
[INFO] running `Command { std: "docker" "start" "-a" "1f60e18354e1ec5094b95c333f404ff98023fcca8c7a72cb76dd532837d4a940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f60e18354e1ec5094b95c333f404ff98023fcca8c7a72cb76dd532837d4a940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f60e18354e1ec5094b95c333f404ff98023fcca8c7a72cb76dd532837d4a940", kill_on_drop: false }`
[INFO] [stdout] 1f60e18354e1ec5094b95c333f404ff98023fcca8c7a72cb76dd532837d4a940
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8609e93fbef15537af6e8bd568b31844c379774bf0e166f610446652a2df6462
[INFO] running `Command { std: "docker" "start" "-a" "8609e93fbef15537af6e8bd568b31844c379774bf0e166f610446652a2df6462", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[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 v1.0.103
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling cc v1.0.76
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling slab v0.4.7
[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] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
[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" "8609e93fbef15537af6e8bd568b31844c379774bf0e166f610446652a2df6462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8609e93fbef15537af6e8bd568b31844c379774bf0e166f610446652a2df6462", kill_on_drop: false }`
[INFO] [stdout] 8609e93fbef15537af6e8bd568b31844c379774bf0e166f610446652a2df6462