[INFO] cloning repository https://github.com/DoumanAsh/grep_vn_walk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DoumanAsh/grep_vn_walk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDoumanAsh%2Fgrep_vn_walk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDoumanAsh%2Fgrep_vn_walk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a25bc2be183286fab712fda25c6ff60958152422
[INFO] checking DoumanAsh/grep_vn_walk/a25bc2be183286fab712fda25c6ff60958152422 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDoumanAsh%2Fgrep_vn_walk" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DoumanAsh/grep_vn_walk 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 git repo https://github.com/DoumanAsh/grep_vn_walk
[INFO] finished tweaking git repo https://github.com/DoumanAsh/grep_vn_walk
[INFO] tweaked toml for git repo https://github.com/DoumanAsh/grep_vn_walk written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/DoumanAsh/grep_vn_walk 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] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ffa7a9628eb74804ed5a77e26e3c798bbb834a3522bbb6d1193750ed0a9ae747
[INFO] running `Command { std: "docker" "start" "-a" "ffa7a9628eb74804ed5a77e26e3c798bbb834a3522bbb6d1193750ed0a9ae747", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffa7a9628eb74804ed5a77e26e3c798bbb834a3522bbb6d1193750ed0a9ae747", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffa7a9628eb74804ed5a77e26e3c798bbb834a3522bbb6d1193750ed0a9ae747", kill_on_drop: false }`
[INFO] [stdout] ffa7a9628eb74804ed5a77e26e3c798bbb834a3522bbb6d1193750ed0a9ae747
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4d5d69e21bfedf819b848a58928152be42392369684c88778225bba9ca46dacc
[INFO] running `Command { std: "docker" "start" "-a" "4d5d69e21bfedf819b848a58928152be42392369684c88778225bba9ca46dacc", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]     Checking futures v0.1.23
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling cc v1.0.23
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking log v0.4.4
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]     Checking lock_api v0.1.3
[INFO] [stderr]     Checking itoa v0.4.2
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking bytes v0.4.9
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
[INFO] [stderr]     Checking mio v0.6.15
[INFO] [stderr]    Compiling httparse v1.3.2
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling serde v1.0.75
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking http v0.1.10
[INFO] [stderr]    Compiling ring v0.13.2
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking tokio-executor v0.1.4
[INFO] [stderr]     Checking tokio-io v0.1.8
[INFO] [stderr]     Checking mio-uds v0.6.6
[INFO] [stderr]     Checking tokio-current-thread v0.1.1
[INFO] [stderr]     Checking tokio-timer v0.2.6
[INFO] [stderr]     Checking base64 v0.9.2
[INFO] [stderr]     Checking parking_lot_core v0.3.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.6
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking tokio-codec v0.1.0
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking string v0.1.1
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]     Checking tokio-reactor v0.1.5
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]     Checking indexmap v1.0.1
[INFO] [stderr]     Checking tokio-fs v0.1.3
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio-tcp v0.1.1
[INFO] [stderr]     Checking tokio-uds v0.2.1
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]     Checking h2 v0.1.12
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking tokio v0.1.8
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking mime v0.3.9
[INFO] [stderr]     Checking phf v0.7.23
[INFO] [stderr]     Checking memchr v2.0.2
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]    Compiling regex v1.0.4
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking url v1.7.1
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]     Checking hyper v0.12.9
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]     Checking flate2 v1.0.2
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]     Checking webpki v0.18.1
[INFO] [stderr]     Checking sct v0.4.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking ct-logs v0.4.0
[INFO] [stderr]     Checking data-encoding v2.1.1
[INFO] [stderr]     Checking rustls v0.13.1
[INFO] [stderr]     Checking webpki-roots v0.15.0
[INFO] [stderr]     Checking utf8-ranges v1.0.1
[INFO] [stderr]     Checking etag v1.0.2
[INFO] [stderr]     Checking lazy-panic v0.3.2
[INFO] [stderr]     Checking serde_urlencoded v0.5.3
[INFO] [stderr]     Checking serde_json v1.0.26
[INFO] [stderr]     Checking tokio-rustls v0.7.2
[INFO] [stderr]     Checking hyper-rustls v0.14.0
[INFO] [stderr]     Checking yukikaze v0.2.0
[INFO] [stderr]     Checking grep_vn_walk v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.32s
[INFO] running `Command { std: "docker" "inspect" "4d5d69e21bfedf819b848a58928152be42392369684c88778225bba9ca46dacc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d5d69e21bfedf819b848a58928152be42392369684c88778225bba9ca46dacc", kill_on_drop: false }`
[INFO] [stdout] 4d5d69e21bfedf819b848a58928152be42392369684c88778225bba9ca46dacc