[INFO] updating cached repository https://github.com/jackwillis/font-metrics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c24318bffa11feeb118b379eca016471bb5633a5
[INFO] testing jackwillis/font-metrics against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackwillis%2Ffont-metrics" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jackwillis/font-metrics on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jackwillis/font-metrics
[INFO] finished tweaking git repo https://github.com/jackwillis/font-metrics
[INFO] tweaked toml for git repo https://github.com/jackwillis/font-metrics written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/jackwillis/font-metrics already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a0863c66fef69b24003ec2671be437057d1f041196a13c1204f7fe287a9d19f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5a0863c66fef69b24003ec2671be437057d1f041196a13c1204f7fe287a9d19f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a0863c66fef69b24003ec2671be437057d1f041196a13c1204f7fe287a9d19f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a0863c66fef69b24003ec2671be437057d1f041196a13c1204f7fe287a9d19f", kill_on_drop: false }`
[INFO] [stdout] 5a0863c66fef69b24003ec2671be437057d1f041196a13c1204f7fe287a9d19f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 487cc94e48d88e88409cbe701ae2bea4b39d633b2b9c972cc6c94d69b86075fa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "487cc94e48d88e88409cbe701ae2bea4b39d633b2b9c972cc6c94d69b86075fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling pom v1.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling postscript v0.11.1
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling stb_truetype v0.2.2
[INFO] [stderr]    Compiling type1-encoding-parser v0.1.0
[INFO] [stderr]    Compiling adobe-cmap-parser v0.3.2
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling flate2 v0.2.20
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling approx v0.2.0
[INFO] [stderr]    Compiling ordered-float v0.5.0
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling rusttype v0.6.1
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling lopdf v0.15.1
[INFO] [stderr]    Compiling euclid v0.15.6
[INFO] [stderr]    Compiling pdf-extract v0.4.3
[INFO] [stderr]    Compiling font_metrics v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `,`, `.`, `?`, `}`, or an operator, found reserved identifier `_`
[INFO] [stdout]    --> bin/fm-fit.rs:181:13
[INFO] [stdout]     |
[INFO] [stdout] 180 |             "russian" => include_str!("../resources/russian.example.tex")
[INFO] [stdout]     |                       -- while parsing the `match` arm starting here     - expected one of `,`, `.`, `?`, `}`, or an operator
[INFO] [stdout] 181 |             _ => "uh oh",
[INFO] [stdout]     |             ^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `English`
[INFO] [stdout]   --> bin/fm-darkness.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     English,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Russian`
[INFO] [stdout]   --> bin/fm-darkness.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Russian,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Custom`
[INFO] [stdout]   --> bin/fm-darkness.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Custom(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `font_metrics`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "487cc94e48d88e88409cbe701ae2bea4b39d633b2b9c972cc6c94d69b86075fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "487cc94e48d88e88409cbe701ae2bea4b39d633b2b9c972cc6c94d69b86075fa", kill_on_drop: false }`
[INFO] [stdout] 487cc94e48d88e88409cbe701ae2bea4b39d633b2b9c972cc6c94d69b86075fa