[INFO] cloning repository https://github.com/OCamlPro/verification_for_dummies
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OCamlPro/verification_for_dummies" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOCamlPro%2Fverification_for_dummies", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOCamlPro%2Fverification_for_dummies'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 448e19a878965b33da10930c50e9942d18a248ab
[INFO] checking OCamlPro/verification_for_dummies/448e19a878965b33da10930c50e9942d18a248ab against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOCamlPro%2Fverification_for_dummies" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/OCamlPro/verification_for_dummies on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OCamlPro/verification_for_dummies
[INFO] finished tweaking git repo https://github.com/OCamlPro/verification_for_dummies
[INFO] tweaked toml for git repo https://github.com/OCamlPro/verification_for_dummies written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/OCamlPro/verification_for_dummies 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3a4849f48baad7739ad541fc3a8bed57d9bff7ae5ee1dc27e6c6e2bf2b1f3fe
[INFO] running `Command { std: "docker" "start" "-a" "b3a4849f48baad7739ad541fc3a8bed57d9bff7ae5ee1dc27e6c6e2bf2b1f3fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3a4849f48baad7739ad541fc3a8bed57d9bff7ae5ee1dc27e6c6e2bf2b1f3fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3a4849f48baad7739ad541fc3a8bed57d9bff7ae5ee1dc27e6c6e2bf2b1f3fe", kill_on_drop: false }`
[INFO] [stdout] b3a4849f48baad7739ad541fc3a8bed57d9bff7ae5ee1dc27e6c6e2bf2b1f3fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fc24d24ff80fa67769d912ecf24f054de2aec4d34c6f25fd2fb0f3182dec95c
[INFO] running `Command { std: "docker" "start" "-a" "1fc24d24ff80fa67769d912ecf24f054de2aec4d34c6f25fd2fb0f3182dec95c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking object v0.26.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking simple_logger v1.13.0
[INFO] [stderr]     Checking addr2line v0.16.0
[INFO] [stderr]     Checking manage_api v0.1.0 (/opt/rustwide/workdir/manage)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.19s
[INFO] running `Command { std: "docker" "inspect" "1fc24d24ff80fa67769d912ecf24f054de2aec4d34c6f25fd2fb0f3182dec95c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fc24d24ff80fa67769d912ecf24f054de2aec4d34c6f25fd2fb0f3182dec95c", kill_on_drop: false }`
[INFO] [stdout] 1fc24d24ff80fa67769d912ecf24f054de2aec4d34c6f25fd2fb0f3182dec95c