[INFO] fetching crate ifcfg 0.1.2...
[INFO] checking ifcfg-0.1.2 against master#6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd for pr-153721
[INFO] extracting crate ifcfg 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate ifcfg 0.1.2
[INFO] finished tweaking crates.io crate ifcfg 0.1.2
[INFO] tweaked toml for crates.io crate ifcfg 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ifcfg 0.1.2 on toolchain 6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ifcfg 0.1.2 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" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memchr v2.3.4
[INFO] [stderr]   Downloaded unicode-xid v0.2.1
[INFO] [stderr]   Downloaded serde_json v1.0.64
[INFO] [stderr]   Downloaded itoa v0.4.7
[INFO] [stderr]   Downloaded log v0.4.14
[INFO] [stderr]   Downloaded cc v1.0.67
[INFO] [stderr]   Downloaded handlebars v0.29.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.24
[INFO] [stderr]   Downloaded aho-corasick v0.6.10
[INFO] [stderr]   Downloaded pest v0.3.3
[INFO] [stderr]   Downloaded serde_derive v1.0.124
[INFO] [stderr]   Downloaded quote v1.0.9
[INFO] [stderr]   Downloaded regex v0.2.11
[INFO] [stderr]   Downloaded regex-syntax v0.5.6
[INFO] [stderr]   Downloaded ryu v1.0.5
[INFO] [stderr]   Downloaded serde v1.0.124
[INFO] [stderr]   Downloaded libc v0.2.88
[INFO] [stderr]   Downloaded syn v1.0.63
[INFO] [stderr]   Downloaded ucd-util v0.1.8
[INFO] [stderr]   Downloaded utf8-ranges v1.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 6223c4f7f03c32cbc72bed9cec0f7e8a7e03b8260ec527c7dfa68c74ce7075d6
[INFO] running `Command { std: "docker" "start" "6223c4f7f03c32cbc72bed9cec0f7e8a7e03b8260ec527c7dfa68c74ce7075d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6223c4f7f03c32cbc72bed9cec0f7e8a7e03b8260ec527c7dfa68c74ce7075d6" "/opt/rustwide/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6223c4f7f03c32cbc72bed9cec0f7e8a7e03b8260ec527c7dfa68c74ce7075d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6223c4f7f03c32cbc72bed9cec0f7e8a7e03b8260ec527c7dfa68c74ce7075d6" "/opt/rustwide/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling pest v0.3.3
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]    Compiling handlebars v0.29.1
[INFO] [stderr]    Compiling ifcfg v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> build.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |     IoError(io::Error),
[INFO] [stdout]     |     ------- ^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` 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] 119 -     IoError(io::Error),
[INFO] [stdout] 119 +     IoError(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> build.rs:120:19
[INFO] [stdout]     |
[INFO] [stdout] 120 |     TemplateError(hbs::TemplateError),
[INFO] [stdout]     |     ------------- ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` 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] 120 -     TemplateError(hbs::TemplateError),
[INFO] [stdout] 120 +     TemplateError(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> build.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |     RenderError(hbs::RenderError),
[INFO] [stdout]     |     ----------- ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` 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] 121 -     RenderError(hbs::RenderError),
[INFO] [stdout] 121 +     RenderError(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `wasi`
[INFO] [stdout]   --> src/unix/constants.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | target_env = "wasi",
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] help: `wasi` is an expected value for `target_os`
[INFO] [stdout]    |
[INFO] [stdout] 19 - target_env = "wasi",
[INFO] [stdout] 19 + target_os = "wasi",
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `wasi`
[INFO] [stdout]   --> src/unix/constants.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | target_env = "wasi",
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] help: `wasi` is an expected value for `target_os`
[INFO] [stdout]    |
[INFO] [stdout] 19 - target_env = "wasi",
[INFO] [stdout] 19 + target_os = "wasi",
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 30.08s
[INFO] running `Command { std: "docker" "inspect" "6223c4f7f03c32cbc72bed9cec0f7e8a7e03b8260ec527c7dfa68c74ce7075d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6223c4f7f03c32cbc72bed9cec0f7e8a7e03b8260ec527c7dfa68c74ce7075d6", kill_on_drop: false }`
[INFO] [stdout] 6223c4f7f03c32cbc72bed9cec0f7e8a7e03b8260ec527c7dfa68c74ce7075d6
