[INFO] fetching crate yarner 0.6.1...
[INFO] checking yarner-0.6.1 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate yarner 0.6.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate yarner 0.6.1
[INFO] finished tweaking crates.io crate yarner 0.6.1
[INFO] tweaked toml for crates.io crate yarner 0.6.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate yarner 0.6.1 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate yarner 0.6.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yarner-lib v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f5953071a679fc3a9d0a698668db00c5acd17ae7fc5b872607ed0a70e2c7659
[INFO] running `Command { std: "docker" "start" "-a" "6f5953071a679fc3a9d0a698668db00c5acd17ae7fc5b872607ed0a70e2c7659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f5953071a679fc3a9d0a698668db00c5acd17ae7fc5b872607ed0a70e2c7659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f5953071a679fc3a9d0a698668db00c5acd17ae7fc5b872607ed0a70e2c7659", kill_on_drop: false }`
[INFO] [stdout] 6f5953071a679fc3a9d0a698668db00c5acd17ae7fc5b872607ed0a70e2c7659
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da6b9fde17f3a47bcd0c714e0fecbead821f3af76ba3f3d3aab2f0e65ce27f4c
[INFO] running `Command { std: "docker" "start" "-a" "da6b9fde17f3a47bcd0c714e0fecbead821f3af76ba3f3d3aab2f0e65ce27f4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking filetime v0.2.17
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking once_cell v1.13.1
[INFO] [stderr]     Checking path-clean v0.1.0
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]     Checking notify v4.0.17
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking yarner-lib v0.6.1
[INFO] [stderr]     Checking yarner v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/print.rs:519:22
[INFO] [stdout]     |
[INFO] [stdout] 519 |         UnknownMacro(String),
[INFO] [stdout]     |         ------------ ^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CompileErrorKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 519 -         UnknownMacro(String),
[INFO] [stdout] 519 +         UnknownMacro(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/print.rs:521:27
[INFO] [stdout]     |
[INFO] [stdout] 521 |         CircularReference(String),
[INFO] [stdout]     |         ----------------- ^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CompileErrorKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 521 -         CircularReference(String),
[INFO] [stdout] 521 +         CircularReference(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/print.rs:519:22
[INFO] [stdout]     |
[INFO] [stdout] 519 |         UnknownMacro(String),
[INFO] [stdout]     |         ------------ ^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CompileErrorKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 519 -         UnknownMacro(String),
[INFO] [stdout] 519 +         UnknownMacro(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/print.rs:521:27
[INFO] [stdout]     |
[INFO] [stdout] 521 |         CircularReference(String),
[INFO] [stdout]     |         ----------------- ^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CompileErrorKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 521 -         CircularReference(String),
[INFO] [stdout] 521 +         CircularReference(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.78s
[INFO] running `Command { std: "docker" "inspect" "da6b9fde17f3a47bcd0c714e0fecbead821f3af76ba3f3d3aab2f0e65ce27f4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da6b9fde17f3a47bcd0c714e0fecbead821f3af76ba3f3d3aab2f0e65ce27f4c", kill_on_drop: false }`
[INFO] [stdout] da6b9fde17f3a47bcd0c714e0fecbead821f3af76ba3f3d3aab2f0e65ce27f4c