[INFO] cloning repository https://github.com/matklad/rowan
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matklad/rowan" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Frowan", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Frowan'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 73ed5e7c331c2bedcf9f022e9681fc4784385dda
[INFO] checking matklad/rowan against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Frowan" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/rowan on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/rowan
[INFO] finished tweaking git repo https://github.com/matklad/rowan
[INFO] tweaked toml for git repo https://github.com/matklad/rowan written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages to latest compatible versions
[INFO] [stderr]       Adding rustc-hash v1.1.0 (latest: v2.0.0)
[INFO] [stderr]       Adding xshell v0.1.17 (latest: v0.2.6)
[INFO] [stderr]       Adding xshell-macros v0.1.17 (latest: v0.2.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xaction v0.2.4
[INFO] [stderr]   Downloaded xshell-macros v0.1.17
[INFO] [stderr]   Downloaded m_lexer v0.0.4
[INFO] [stderr]   Downloaded xshell v0.1.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdd6ef115a5c5defd1ea6b2a51d0acd929ec6c6aea6d666d2ea4b09f1d4f35fd
[INFO] running `Command { std: "docker" "start" "-a" "cdd6ef115a5c5defd1ea6b2a51d0acd929ec6c6aea6d666d2ea4b09f1d4f35fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdd6ef115a5c5defd1ea6b2a51d0acd929ec6c6aea6d666d2ea4b09f1d4f35fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdd6ef115a5c5defd1ea6b2a51d0acd929ec6c6aea6d666d2ea4b09f1d4f35fd", kill_on_drop: false }`
[INFO] [stdout] cdd6ef115a5c5defd1ea6b2a51d0acd929ec6c6aea6d666d2ea4b09f1d4f35fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f4df2c1ac3ae7d9f6d0e51342e857ebfe7951c0b766515eb9cc6d47dbc20eaf
[INFO] running `Command { std: "docker" "start" "-a" "5f4df2c1ac3ae7d9f6d0e51342e857ebfe7951c0b766515eb9cc6d47dbc20eaf", kill_on_drop: false }`
[INFO] [stderr]     Checking countme v3.0.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]    Compiling xshell-macros v0.1.17
[INFO] [stderr]     Checking text-size v1.1.1
[INFO] [stderr]     Checking m_lexer v0.0.4
[INFO] [stderr]     Checking xshell v0.1.17
[INFO] [stderr]     Checking xaction v0.2.4
[INFO] [stderr]     Checking xtask v0.0.0 (/opt/rustwide/workdir/xtask)
[INFO] [stderr]     Checking rowan v0.15.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/syntax_text.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |             Err(void) => match void {},
[INFO] [stdout]     |             ^^^^^^^^^ matches no values because `Void` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/syntax_text.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |             Err(void) => match void {},
[INFO] [stdout]     |             ^^^^^^^^^ matches no values because `Void` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "5f4df2c1ac3ae7d9f6d0e51342e857ebfe7951c0b766515eb9cc6d47dbc20eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f4df2c1ac3ae7d9f6d0e51342e857ebfe7951c0b766515eb9cc6d47dbc20eaf", kill_on_drop: false }`
[INFO] [stdout] 5f4df2c1ac3ae7d9f6d0e51342e857ebfe7951c0b766515eb9cc6d47dbc20eaf