[INFO] fetching crate singularity 0.8.0...
[INFO] checking singularity-0.8.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate singularity 0.8.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate singularity 0.8.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate singularity 0.8.0
[INFO] finished tweaking crates.io crate singularity 0.8.0
[INFO] tweaked toml for crates.io crate singularity 0.8.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate singularity 0.8.0 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8bf198cc2b97e7a39f520b12ce176e11552a5424733dfa513b70f06b38be17b
[INFO] running `Command { std: "docker" "start" "-a" "c8bf198cc2b97e7a39f520b12ce176e11552a5424733dfa513b70f06b38be17b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8bf198cc2b97e7a39f520b12ce176e11552a5424733dfa513b70f06b38be17b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8bf198cc2b97e7a39f520b12ce176e11552a5424733dfa513b70f06b38be17b", kill_on_drop: false }`
[INFO] [stdout] c8bf198cc2b97e7a39f520b12ce176e11552a5424733dfa513b70f06b38be17b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cadc56e2686ada2c0734a3246a2e389ccb9eddb72228d9974c27adb6fdfcfe69
[INFO] running `Command { std: "docker" "start" "-a" "cadc56e2686ada2c0734a3246a2e389ccb9eddb72228d9974c27adb6fdfcfe69", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling serde_derive v1.0.132
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crc32fast v1.3.0
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking chunked_transfer v1.4.0
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking fern v0.6.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking num-format v0.4.0
[INFO] [stderr]     Checking webpki-roots v0.22.2
[INFO] [stderr]     Checking rustls v0.20.2
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking structopt v0.3.25
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking ureq v2.4.0
[INFO] [stderr]     Checking confy v0.4.0
[INFO] [stderr]     Checking singularity v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.58s
[INFO] running `Command { std: "docker" "inspect" "cadc56e2686ada2c0734a3246a2e389ccb9eddb72228d9974c27adb6fdfcfe69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cadc56e2686ada2c0734a3246a2e389ccb9eddb72228d9974c27adb6fdfcfe69", kill_on_drop: false }`
[INFO] [stdout] cadc56e2686ada2c0734a3246a2e389ccb9eddb72228d9974c27adb6fdfcfe69