[INFO] cloning repository https://github.com/rome/newfmt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rome/newfmt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frome%2Fnewfmt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frome%2Fnewfmt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2cc7dfaf64df8157fd69638d74977830ee477613
[INFO] checking rome/newfmt against master#32c26302620b2dbbe0a2291f1969bc0b1622ae59 for pr-95755
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frome%2Fnewfmt" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rome/newfmt on toolchain 32c26302620b2dbbe0a2291f1969bc0b1622ae59
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32c26302620b2dbbe0a2291f1969bc0b1622ae59" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rome/newfmt
[INFO] finished tweaking git repo https://github.com/rome/newfmt
[INFO] tweaked toml for git repo https://github.com/rome/newfmt written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/rome/newfmt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32c26302620b2dbbe0a2291f1969bc0b1622ae59" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+32c26302620b2dbbe0a2291f1969bc0b1622ae59" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb486cafb51abd6d6af91e381f8a6ec29c877b534ba19a41c6f8ad185fd9b4ad
[INFO] running `Command { std: "docker" "start" "-a" "bb486cafb51abd6d6af91e381f8a6ec29c877b534ba19a41c6f8ad185fd9b4ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb486cafb51abd6d6af91e381f8a6ec29c877b534ba19a41c6f8ad185fd9b4ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb486cafb51abd6d6af91e381f8a6ec29c877b534ba19a41c6f8ad185fd9b4ad", kill_on_drop: false }`
[INFO] [stdout] bb486cafb51abd6d6af91e381f8a6ec29c877b534ba19a41c6f8ad185fd9b4ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+32c26302620b2dbbe0a2291f1969bc0b1622ae59" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7d07d7f23e5b426fb55813d0810f6c98a636d26147238c449d19e51c728cd2e
[INFO] running `Command { std: "docker" "start" "-a" "b7d07d7f23e5b426fb55813d0810f6c98a636d26147238c449d19e51c728cd2e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking newfmt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Number`
[INFO] [stdout]    --> src/main.rs:177:5
[INFO] [stdout]     |
[INFO] [stdout] 177 |     Number(i64),
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:293:42
[INFO] [stdout]     |
[INFO] [stdout] 293 |         pretty_print_format_element(200, doc.clone())
[INFO] [stdout]     |                                          ^^^^^^^^^^^ expected struct `Rc`, found enum `FormatElement`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `Rc<FormatElement>`
[INFO] [stdout]                  found enum `FormatElement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:298:41
[INFO] [stdout]     |
[INFO] [stdout] 298 |         pretty_print_format_element(50, doc)
[INFO] [stdout]     |                                         ^^^ expected struct `Rc`, found enum `FormatElement`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `Rc<FormatElement>`
[INFO] [stdout]                  found enum `FormatElement`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `newfmt` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "b7d07d7f23e5b426fb55813d0810f6c98a636d26147238c449d19e51c728cd2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7d07d7f23e5b426fb55813d0810f6c98a636d26147238c449d19e51c728cd2e", kill_on_drop: false }`
[INFO] [stdout] b7d07d7f23e5b426fb55813d0810f6c98a636d26147238c449d19e51c728cd2e