[INFO] fetching crate derive-deftly-macros 1.5.1...
[INFO] checking derive-deftly-macros-1.5.1 against master#8202d110516c6bd87cee375e9a9b774db499015c for pr-149596
[INFO] extracting crate derive-deftly-macros 1.5.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate derive-deftly-macros 1.5.1
[INFO] finished tweaking crates.io crate derive-deftly-macros 1.5.1
[INFO] tweaked toml for crates.io crate derive-deftly-macros 1.5.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate derive-deftly-macros 1.5.1 on toolchain 8202d110516c6bd87cee375e9a9b774db499015c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate derive-deftly-macros 1.5.1 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" "+8202d110516c6bd87cee375e9a9b774db499015c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf541cceb0cb0ab79b17ffabc8c0d1ec325b0ffbcab79dec35e9fc5f046278f5
[INFO] running `Command { std: "docker" "start" "-a" "bf541cceb0cb0ab79b17ffabc8c0d1ec325b0ffbcab79dec35e9fc5f046278f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf541cceb0cb0ab79b17ffabc8c0d1ec325b0ffbcab79dec35e9fc5f046278f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf541cceb0cb0ab79b17ffabc8c0d1ec325b0ffbcab79dec35e9fc5f046278f5", kill_on_drop: false }`
[INFO] [stdout] bf541cceb0cb0ab79b17ffabc8c0d1ec325b0ffbcab79dec35e9fc5f046278f5
[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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+8202d110516c6bd87cee375e9a9b774db499015c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4290fe7253f92d5dd547eec2f175d5ae55fd8810ae2183545f6f769867827f7e
[INFO] running `Command { std: "docker" "start" "-a" "4290fe7253f92d5dd547eec2f175d5ae55fd8810ae2183545f6f769867827f7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]     Checking hashbrown v0.15.5
[INFO] [stderr]     Checking equivalent v1.0.2
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]     Checking winnow v0.7.13
[INFO] [stderr]     Checking toml_datetime v0.6.11
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]    Compiling derive-deftly-macros v1.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking itertools v0.14.0
[INFO] [stderr]     Checking indexmap v2.11.0
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking syn v2.0.106
[INFO] [stderr]     Checking toml_edit v0.22.27
[INFO] [stderr]     Checking proc-macro-crate v3.3.0
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]     Checking strum v0.27.2
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> syntax.rs:1354:55
[INFO] [stdout]      |
[INFO] [stdout] 1354 |             let segment = attr.path().segments.iter().exactly_one().ok()?;
[INFO] [stdout]      |                                                       ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout]      = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]     -->  macros.rs:9:1
[INFO] [stdout]      |
[INFO] [stdout]    9 + #![feature(exact_length_collection)]
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: a method with this name may be added to the standard library in the future
[INFO] [stdout]     --> syntax.rs:1354:55
[INFO] [stdout]      |
[INFO] [stdout] 1354 |             let segment = attr.path().segments.iter().exactly_one().ok()?;
[INFO] [stdout]      |                                                       ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]      = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]      = help: call with fully qualified syntax `itertools::Itertools::exactly_one(...)` to keep using the current method
[INFO] [stdout]      = note: `#[warn(unstable_name_collisions)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] help: add `#![feature(exact_length_collection)]` to the crate attributes to enable `std::iter::Iterator::exactly_one`
[INFO] [stdout]     -->  macros.rs:9:1
[INFO] [stdout]      |
[INFO] [stdout]    9 + #![feature(exact_length_collection)]
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.03s
[INFO] running `Command { std: "docker" "inspect" "4290fe7253f92d5dd547eec2f175d5ae55fd8810ae2183545f6f769867827f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4290fe7253f92d5dd547eec2f175d5ae55fd8810ae2183545f6f769867827f7e", kill_on_drop: false }`
[INFO] [stdout] 4290fe7253f92d5dd547eec2f175d5ae55fd8810ae2183545f6f769867827f7e