[INFO] fetching crate ref_arena 0.1.1...
[INFO] checking ref_arena-0.1.1 against master#5337252b9952fdd9482ed6a4add17254e5bd2c40 for pr-138785
[INFO] extracting crate ref_arena 0.1.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate ref_arena 0.1.1 on toolchain 5337252b9952fdd9482ed6a4add17254e5bd2c40
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ref_arena 0.1.1
[INFO] finished tweaking crates.io crate ref_arena 0.1.1
[INFO] tweaked toml for crates.io crate ref_arena 0.1.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "generate-lockfile" "--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]      Locking 3 packages to latest compatible versions
[INFO] [stderr]       Adding brunch v0.5.3 (available: v0.9.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dactyl v0.7.4
[INFO] [stderr]   Downloaded brunch v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d6e2d57149483be606b9d3c79e275e127aeaa9fd7819b1e1dca927988c78e74
[INFO] running `Command { std: "docker" "start" "-a" "0d6e2d57149483be606b9d3c79e275e127aeaa9fd7819b1e1dca927988c78e74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d6e2d57149483be606b9d3c79e275e127aeaa9fd7819b1e1dca927988c78e74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d6e2d57149483be606b9d3c79e275e127aeaa9fd7819b1e1dca927988c78e74", kill_on_drop: false }`
[INFO] [stdout] 0d6e2d57149483be606b9d3c79e275e127aeaa9fd7819b1e1dca927988c78e74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0311fd8cbd568ddef06bc6ac001f5f34a1a3bb659634e9e73f596f58940b429a
[INFO] running `Command { std: "docker" "start" "-a" "0311fd8cbd568ddef06bc6ac001f5f34a1a3bb659634e9e73f596f58940b429a", kill_on_drop: false }`
[INFO] [stderr]    Compiling dactyl v0.7.4
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking ref_arena v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking brunch v0.5.3
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `Command { std: "docker" "inspect" "0311fd8cbd568ddef06bc6ac001f5f34a1a3bb659634e9e73f596f58940b429a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0311fd8cbd568ddef06bc6ac001f5f34a1a3bb659634e9e73f596f58940b429a", kill_on_drop: false }`
[INFO] [stdout] 0311fd8cbd568ddef06bc6ac001f5f34a1a3bb659634e9e73f596f58940b429a