[INFO] fetching crate sedimentree_automerge 0.1.0...
[INFO] checking sedimentree_automerge-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate sedimentree_automerge 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate sedimentree_automerge 0.1.0
[INFO] finished tweaking crates.io crate sedimentree_automerge 0.1.0
[INFO] tweaked toml for crates.io crate sedimentree_automerge 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sedimentree_automerge 0.1.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sedimentree_automerge 0.1.0 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb8dfe9aef697b6868014ef491ad3c093d631870272a03e501f9549b34c69a41
[INFO] running `Command { std: "docker" "start" "-a" "cb8dfe9aef697b6868014ef491ad3c093d631870272a03e501f9549b34c69a41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb8dfe9aef697b6868014ef491ad3c093d631870272a03e501f9549b34c69a41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb8dfe9aef697b6868014ef491ad3c093d631870272a03e501f9549b34c69a41", kill_on_drop: false }`
[INFO] [stdout] cb8dfe9aef697b6868014ef491ad3c093d631870272a03e501f9549b34c69a41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b50a3ceda0271663669c4396ea64c474d05ed12bdd895582d3d93e9647eb4fa
[INFO] running `Command { std: "docker" "start" "-a" "6b50a3ceda0271663669c4396ea64c474d05ed12bdd895582d3d93e9647eb4fa", kill_on_drop: false }`
[INFO] [stderr] Compiling proc-macro2 v1.0.102
[INFO] [stderr] Compiling typenum v1.19.0
[INFO] [stderr] Compiling getrandom v0.3.4
[INFO] [stderr] Compiling blake3 v1.8.2
[INFO] [stderr] Checking const-oid v0.10.1
[INFO] [stderr] Checking leb128 v0.2.5
[INFO] [stderr] Checking flate2 v1.1.4
[INFO] [stderr] Checking rand_core v0.9.3
[INFO] [stderr] Checking rand_chacha v0.9.0
[INFO] [stderr] Checking rand v0.9.2
[INFO] [stderr] Compiling quote v1.0.41
[INFO] [stderr] Compiling syn v2.0.108
[INFO] [stderr] Checking hybrid-array v0.4.5
[INFO] [stderr] Checking block-buffer v0.11.0-rc.5
[INFO] [stderr] Checking crypto-common v0.2.0-rc.4
[INFO] [stderr] Checking digest v0.11.0-rc.3
[INFO] [stderr] Checking sha2 v0.11.0-rc.2
[INFO] [stderr] Compiling futures-macro v0.3.31
[INFO] [stderr] Compiling thiserror-impl v2.0.17
[INFO] [stderr] Compiling serde_derive v1.0.228
[INFO] [stderr] Compiling tracing-attributes v0.1.30
[INFO] [stderr] Checking futures-util v0.3.31
[INFO] [stderr] Checking thiserror v2.0.17
[INFO] [stderr] Checking hexane v0.1.5
[INFO] [stderr] Checking tracing v0.1.41
[INFO] [stderr] Checking serde v1.0.228
[INFO] [stderr] Checking futures-executor v0.3.31
[INFO] [stderr] Checking smol_str v0.3.2
[INFO] [stderr] Checking futures v0.3.31
[INFO] [stderr] Checking automerge v0.7.0
[INFO] [stderr] Checking sedimentree_core v0.1.0
[INFO] [stderr] Checking sedimentree_automerge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result