[INFO] cloning repository https://github.com/k-nasa/menbei
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/k-nasa/menbei" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-nasa%2Fmenbei", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-nasa%2Fmenbei'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4d22fb8022ad6682332fa238c53632e9f094d31
[INFO] checking k-nasa/menbei against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-nasa%2Fmenbei" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/k-nasa/menbei on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/k-nasa/menbei
[INFO] finished tweaking git repo https://github.com/k-nasa/menbei
[INFO] tweaked toml for git repo https://github.com/k-nasa/menbei written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/k-nasa/menbei 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded toml v0.5.0
[INFO] [stderr]   Downloaded serde_yaml v0.8.8
[INFO] [stderr]   Downloaded redox_syscall v0.1.50
[INFO] [stderr]   Downloaded rustc-demangle v0.1.13
[INFO] [stderr]   Downloaded cc v1.0.28
[INFO] [stderr]   Downloaded backtrace v0.3.13
[INFO] [stderr]   Downloaded regex v1.1.5
[INFO] [stderr]   Downloaded libc v0.2.47
[INFO] [stderr]   Downloaded syn v0.15.26
[INFO] [stderr]   Downloaded serde_derive v1.0.89
[INFO] [stderr]   Downloaded yaml-rust v0.4.2
[INFO] [stderr]   Downloaded proc-macro2 v0.4.25
[INFO] [stderr]   Downloaded dtoa v0.4.3
[INFO] [stderr]   Downloaded linked-hash-map v0.5.1
[INFO] [stderr]   Downloaded serde v1.0.87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2066ed35106d9c7493ea428fe5f5af26d53f5c451c9778d5aae5cf7d5a7677d4
[INFO] running `Command { std: "docker" "start" "-a" "2066ed35106d9c7493ea428fe5f5af26d53f5c451c9778d5aae5cf7d5a7677d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2066ed35106d9c7493ea428fe5f5af26d53f5c451c9778d5aae5cf7d5a7677d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2066ed35106d9c7493ea428fe5f5af26d53f5c451c9778d5aae5cf7d5a7677d4", kill_on_drop: false }`
[INFO] [stdout] 2066ed35106d9c7493ea428fe5f5af26d53f5c451c9778d5aae5cf7d5a7677d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 533a3cbd77b99208540350e1320567c4605904ef8cafb5bc85040e6f6912589a
[INFO] running `Command { std: "docker" "start" "-a" "533a3cbd77b99208540350e1320567c4605904ef8cafb5bc85040e6f6912589a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.25
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling serde v1.0.87
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling regex v1.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking yaml-rust v0.4.2
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking serde_yaml v0.8.8
[INFO] [stderr]     Checking toml v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking menbei v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.86s
[INFO] running `Command { std: "docker" "inspect" "533a3cbd77b99208540350e1320567c4605904ef8cafb5bc85040e6f6912589a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "533a3cbd77b99208540350e1320567c4605904ef8cafb5bc85040e6f6912589a", kill_on_drop: false }`
[INFO] [stdout] 533a3cbd77b99208540350e1320567c4605904ef8cafb5bc85040e6f6912589a
[INFO] checking k-nasa/menbei against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fk-nasa%2Fmenbei" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/k-nasa/menbei on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/k-nasa/menbei
[INFO] finished tweaking git repo https://github.com/k-nasa/menbei
[INFO] tweaked toml for git repo https://github.com/k-nasa/menbei written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/k-nasa/menbei 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02472639b6f38d50eb2986e373058c7c6078af09a2a4793b79c202f883965149
[INFO] running `Command { std: "docker" "start" "-a" "02472639b6f38d50eb2986e373058c7c6078af09a2a4793b79c202f883965149", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02472639b6f38d50eb2986e373058c7c6078af09a2a4793b79c202f883965149", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02472639b6f38d50eb2986e373058c7c6078af09a2a4793b79c202f883965149", kill_on_drop: false }`
[INFO] [stdout] 02472639b6f38d50eb2986e373058c7c6078af09a2a4793b79c202f883965149
[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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcb8170b1043bc853597aa1821813021603bf45f85174882357e28e321ac72d0
[INFO] running `Command { std: "docker" "start" "-a" "fcb8170b1043bc853597aa1821813021603bf45f85174882357e28e321ac72d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.25
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling serde v1.0.87
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling regex v1.1.5
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking yaml-rust v0.4.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking serde_yaml v0.8.8
[INFO] [stderr]     Checking toml v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking menbei v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.45s
[INFO] running `Command { std: "docker" "inspect" "fcb8170b1043bc853597aa1821813021603bf45f85174882357e28e321ac72d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcb8170b1043bc853597aa1821813021603bf45f85174882357e28e321ac72d0", kill_on_drop: false }`
[INFO] [stdout] fcb8170b1043bc853597aa1821813021603bf45f85174882357e28e321ac72d0