[INFO] fetching crate scaffold 0.5.1...
[INFO] checking scaffold-0.5.1 against try#18f0df251aa25bd85bb3d295ad1bd925a64b1ffc for pr-94063
[INFO] extracting crate scaffold 0.5.1 into /workspace/builds/worker-61/source
[INFO] validating manifest of crates.io crate scaffold 0.5.1 on toolchain 18f0df251aa25bd85bb3d295ad1bd925a64b1ffc
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+18f0df251aa25bd85bb3d295ad1bd925a64b1ffc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scaffold 0.5.1
[INFO] finished tweaking crates.io crate scaffold 0.5.1
[INFO] tweaked toml for crates.io crate scaffold 0.5.1 written to /workspace/builds/worker-61/source/Cargo.toml
[INFO] crate crates.io crate scaffold 0.5.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+18f0df251aa25bd85bb3d295ad1bd925a64b1ffc" "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-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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" "+18f0df251aa25bd85bb3d295ad1bd925a64b1ffc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4572ad9f003156c426a5591e70681a11166b29ba014e9862c935f0e5a91bd26
[INFO] running `Command { std: "docker" "start" "-a" "c4572ad9f003156c426a5591e70681a11166b29ba014e9862c935f0e5a91bd26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4572ad9f003156c426a5591e70681a11166b29ba014e9862c935f0e5a91bd26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4572ad9f003156c426a5591e70681a11166b29ba014e9862c935f0e5a91bd26", kill_on_drop: false }`
[INFO] [stdout] c4572ad9f003156c426a5591e70681a11166b29ba014e9862c935f0e5a91bd26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+18f0df251aa25bd85bb3d295ad1bd925a64b1ffc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0d52081b2ee57641f79b71b30318517e235726e688c3f34dfcbbbd86a5e9786
[INFO] running `Command { std: "docker" "start" "-a" "e0d52081b2ee57641f79b71b30318517e235726e688c3f34dfcbbbd86a5e9786", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking rpassword v2.1.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking shellexpand v1.1.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling structopt-derive v0.4.11
[INFO] [stderr]     Checking quest v0.3.0
[INFO] [stderr]     Checking structopt v0.3.18
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking scaffold v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `groups`
[INFO] [stdout]   --> src/group_reader.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     groups: HashMap<String, Vec<Dependency>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `DependencyGroups` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/group_reader.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `groups`
[INFO] [stdout]   --> src/group_reader.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     groups: HashMap<String, Vec<Dependency>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `DependencyGroups` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/group_reader.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[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 [unoptimized + debuginfo] target(s) in 2m 11s
[INFO] running `Command { std: "docker" "inspect" "e0d52081b2ee57641f79b71b30318517e235726e688c3f34dfcbbbd86a5e9786", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0d52081b2ee57641f79b71b30318517e235726e688c3f34dfcbbbd86a5e9786", kill_on_drop: false }`
[INFO] [stdout] e0d52081b2ee57641f79b71b30318517e235726e688c3f34dfcbbbd86a5e9786