[INFO] fetching crate scan-fonts 1.0.0...
[INFO] testing scan-fonts-1.0.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate scan-fonts 1.0.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate scan-fonts 1.0.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scan-fonts 1.0.0
[INFO] finished tweaking crates.io crate scan-fonts 1.0.0
[INFO] tweaked toml for crates.io crate scan-fonts 1.0.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34494e5fb5eb8ff663503594ba77b004befdf9694c215743b5faa858fca9e7bb
[INFO] running `Command { std: "docker" "start" "-a" "34494e5fb5eb8ff663503594ba77b004befdf9694c215743b5faa858fca9e7bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34494e5fb5eb8ff663503594ba77b004befdf9694c215743b5faa858fca9e7bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34494e5fb5eb8ff663503594ba77b004befdf9694c215743b5faa858fca9e7bb", kill_on_drop: false }`
[INFO] [stdout] 34494e5fb5eb8ff663503594ba77b004befdf9694c215743b5faa858fca9e7bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26a733a5d3e00fa1f5660e2f6de7bd61220ae30bcd06cf5512d87846dfb37c04
[INFO] running `Command { std: "docker" "start" "-a" "26a733a5d3e00fa1f5660e2f6de7bd61220ae30bcd06cf5512d87846dfb37c04", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling getset v0.0.6
[INFO] [stderr]    Compiling scan-fonts v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `path`
[INFO] [stdout]   --> src/iterator.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   path: PathBuf,
[INFO] [stdout]    |   ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(try_from)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(try_from)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `scan-fonts` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "26a733a5d3e00fa1f5660e2f6de7bd61220ae30bcd06cf5512d87846dfb37c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26a733a5d3e00fa1f5660e2f6de7bd61220ae30bcd06cf5512d87846dfb37c04", kill_on_drop: false }`
[INFO] [stdout] 26a733a5d3e00fa1f5660e2f6de7bd61220ae30bcd06cf5512d87846dfb37c04