[INFO] fetching crate println_logger 0.2.0...
[INFO] documenting println_logger-0.2.0 against master#e1df625306f4136949e02612406f0c60df6008f3 for pr-96676
[INFO] extracting crate println_logger 0.2.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate println_logger 0.2.0 on toolchain e1df625306f4136949e02612406f0c60df6008f3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate println_logger 0.2.0
[INFO] finished tweaking crates.io crate println_logger 0.2.0
[INFO] tweaked toml for crates.io crate println_logger 0.2.0 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fe46b3fe1b4fce260f1a4c2f5a5101edb5ff473d8b349644ec290e02d0a8e9f
[INFO] running `Command { std: "docker" "start" "-a" "2fe46b3fe1b4fce260f1a4c2f5a5101edb5ff473d8b349644ec290e02d0a8e9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fe46b3fe1b4fce260f1a4c2f5a5101edb5ff473d8b349644ec290e02d0a8e9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fe46b3fe1b4fce260f1a4c2f5a5101edb5ff473d8b349644ec290e02d0a8e9f", kill_on_drop: false }`
[INFO] [stdout] 2fe46b3fe1b4fce260f1a4c2f5a5101edb5ff473d8b349644ec290e02d0a8e9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 295a1862c006c168e9fb82674673d9c79b76acd32396af4bc847a5f7ef869bdd
[INFO] running `Command { std: "docker" "start" "-a" "295a1862c006c168e9fb82674673d9c79b76acd32396af4bc847a5f7ef869bdd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]  Documenting println_logger v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "295a1862c006c168e9fb82674673d9c79b76acd32396af4bc847a5f7ef869bdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "295a1862c006c168e9fb82674673d9c79b76acd32396af4bc847a5f7ef869bdd", kill_on_drop: false }`
[INFO] [stdout] 295a1862c006c168e9fb82674673d9c79b76acd32396af4bc847a5f7ef869bdd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 28640f2ae53723f869db1d2d6a1607f4d1ed3b0c04783407b54538222e63ec2d
[INFO] running `Command { std: "docker" "start" "-a" "28640f2ae53723f869db1d2d6a1607f4d1ed3b0c04783407b54538222e63ec2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]  Documenting println_logger v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "28640f2ae53723f869db1d2d6a1607f4d1ed3b0c04783407b54538222e63ec2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28640f2ae53723f869db1d2d6a1607f4d1ed3b0c04783407b54538222e63ec2d", kill_on_drop: false }`
[INFO] [stdout] 28640f2ae53723f869db1d2d6a1607f4d1ed3b0c04783407b54538222e63ec2d