[INFO] fetching crate yarner 0.6.1...
[INFO] building yarner-0.6.1 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate yarner 0.6.1 into /workspace/builds/worker-2-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate yarner 0.6.1 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f04c118ff1619b90b8920ff18318f3c484817bd661832c4b01efb9a9fb07019e
[INFO] running `Command { std: "docker" "start" "-a" "f04c118ff1619b90b8920ff18318f3c484817bd661832c4b01efb9a9fb07019e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f04c118ff1619b90b8920ff18318f3c484817bd661832c4b01efb9a9fb07019e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f04c118ff1619b90b8920ff18318f3c484817bd661832c4b01efb9a9fb07019e", kill_on_drop: false }`
[INFO] [stdout] f04c118ff1619b90b8920ff18318f3c484817bd661832c4b01efb9a9fb07019e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1c7258231b46973ec400ebd43d7cb6e2e2407dd536860d0e27ee83f78999a02
[INFO] running `Command { std: "docker" "start" "-a" "d1c7258231b46973ec400ebd43d7cb6e2e2407dd536860d0e27ee83f78999a02", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling itoa v1.0.3
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling pathdiff v0.2.1
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling path-clean v0.1.0
[INFO] [stderr]    Compiling once_cell v1.13.1
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling filetime v0.2.17
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling yarner-lib v0.6.1
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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 16.42s
[INFO] running `Command { std: "docker" "inspect" "d1c7258231b46973ec400ebd43d7cb6e2e2407dd536860d0e27ee83f78999a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1c7258231b46973ec400ebd43d7cb6e2e2407dd536860d0e27ee83f78999a02", kill_on_drop: false }`
[INFO] [stdout] d1c7258231b46973ec400ebd43d7cb6e2e2407dd536860d0e27ee83f78999a02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c437714fcef9aba78e50d42ef053e877c84e157765ab4b502142f190de563de
[INFO] running `Command { std: "docker" "start" "-a" "0c437714fcef9aba78e50d42ef053e877c84e157765ab4b502142f190de563de", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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 `test` profile [unoptimized + debuginfo] target(s) in 2.67s
[INFO] running `Command { std: "docker" "inspect" "0c437714fcef9aba78e50d42ef053e877c84e157765ab4b502142f190de563de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c437714fcef9aba78e50d42ef053e877c84e157765ab4b502142f190de563de", kill_on_drop: false }`
[INFO] [stdout] 0c437714fcef9aba78e50d42ef053e877c84e157765ab4b502142f190de563de