[INFO] fetching crate cargo-snippet 0.6.5...
[INFO] checking cargo-snippet-0.6.5 against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] extracting crate cargo-snippet 0.6.5 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate cargo-snippet 0.6.5 on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-snippet 0.6.5
[INFO] finished tweaking crates.io crate cargo-snippet 0.6.5
[INFO] tweaked toml for crates.io crate cargo-snippet 0.6.5 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate cargo-snippet 0.6.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-rayon-core v0.3.0
[INFO] [stderr]   Downloaded stacker v0.1.9
[INFO] [stderr]   Downloaded rustc-rayon v0.3.0
[INFO] [stderr]   Downloaded psm v0.1.10
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_attr v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_passes v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_session v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_expand v664.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v664.0.0
[INFO] [stderr]   Downloaded rustfmt-nightly v1.4.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0054eefe97fcdd83bb47c7f13b247006924f0fee6152715196cfae264823e597
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0054eefe97fcdd83bb47c7f13b247006924f0fee6152715196cfae264823e597", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0054eefe97fcdd83bb47c7f13b247006924f0fee6152715196cfae264823e597", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0054eefe97fcdd83bb47c7f13b247006924f0fee6152715196cfae264823e597", kill_on_drop: false }`
[INFO] [stdout] 0054eefe97fcdd83bb47c7f13b247006924f0fee6152715196cfae264823e597
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd40eb346967cbae760136583db75729f535c04c0eaad78a4bf01bbe09afb39e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bd40eb346967cbae760136583db75729f535c04c0eaad78a4bf01bbe09afb39e", kill_on_drop: false }`
[INFO] [stderr]     Checking cargo-snippet v0.6.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "bd40eb346967cbae760136583db75729f535c04c0eaad78a4bf01bbe09afb39e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd40eb346967cbae760136583db75729f535c04c0eaad78a4bf01bbe09afb39e", kill_on_drop: false }`
[INFO] [stdout] bd40eb346967cbae760136583db75729f535c04c0eaad78a4bf01bbe09afb39e