[INFO] fetching crate confiner 0.2.1...
[INFO] checking confiner-0.2.1 against master#5ad98b4026d5172f27615b105658bc8bfd677be8 for pr-129422
[INFO] extracting crate confiner 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate confiner 0.2.1 on toolchain 5ad98b4026d5172f27615b105658bc8bfd677be8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate confiner 0.2.1
[INFO] finished tweaking crates.io crate confiner 0.2.1
[INFO] tweaked toml for crates.io crate confiner 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] [stderr]       Adding yansi v0.5.1 (latest: v1.0.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 512878d46067ef37408164cc5fd540478752be55a097f1814329fe61d8abe116
[INFO] running `Command { std: "docker" "start" "-a" "512878d46067ef37408164cc5fd540478752be55a097f1814329fe61d8abe116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "512878d46067ef37408164cc5fd540478752be55a097f1814329fe61d8abe116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512878d46067ef37408164cc5fd540478752be55a097f1814329fe61d8abe116", kill_on_drop: false }`
[INFO] [stdout] 512878d46067ef37408164cc5fd540478752be55a097f1814329fe61d8abe116
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 982c4cd5968b72c177630d76a9334dc46494d6b2f819dfa892173929806832de
[INFO] running `Command { std: "docker" "start" "-a" "982c4cd5968b72c177630d76a9334dc46494d6b2f819dfa892173929806832de", kill_on_drop: false }`
[INFO] [stderr]    Compiling peg-runtime v0.8.3
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking pretty_assertions v1.4.0
[INFO] [stderr]    Compiling peg-macros v0.8.4
[INFO] [stderr]     Checking peg v0.8.4
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]     Checking serde v1.0.209
[INFO] [stderr]     Checking confiner v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `confiner_grammar::block`
[INFO] [stdout]    --> src/grammar.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 | pub use confiner_grammar::block;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `confiner_grammar::expr`
[INFO] [stdout]    --> src/grammar.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 | pub use confiner_grammar::expr;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::Deserialize`
[INFO] [stdout]    --> src/deser.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |     use serde::Deserialize;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.57s
[INFO] running `Command { std: "docker" "inspect" "982c4cd5968b72c177630d76a9334dc46494d6b2f819dfa892173929806832de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "982c4cd5968b72c177630d76a9334dc46494d6b2f819dfa892173929806832de", kill_on_drop: false }`
[INFO] [stdout] 982c4cd5968b72c177630d76a9334dc46494d6b2f819dfa892173929806832de