[INFO] cloning repository https://github.com/nstrmx/parallel-downloader
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nstrmx/parallel-downloader" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnstrmx%2Fparallel-downloader", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnstrmx%2Fparallel-downloader'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71f3f837a742f3271d647d00db19b2c5c752e209
[INFO] checking nstrmx/parallel-downloader against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnstrmx%2Fparallel-downloader" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nstrmx/parallel-downloader on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nstrmx/parallel-downloader
[INFO] finished tweaking git repo https://github.com/nstrmx/parallel-downloader
[INFO] tweaked toml for git repo https://github.com/nstrmx/parallel-downloader written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nstrmx/parallel-downloader 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded log4rs v1.3.0
[INFO] [stderr]   Downloaded arc-swap v1.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5dec69aea2c4fce11d410491198187471f14404091eef86d0537266c932db32
[INFO] running `Command { std: "docker" "start" "-a" "e5dec69aea2c4fce11d410491198187471f14404091eef86d0537266c932db32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5dec69aea2c4fce11d410491198187471f14404091eef86d0537266c932db32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5dec69aea2c4fce11d410491198187471f14404091eef86d0537266c932db32", kill_on_drop: false }`
[INFO] [stdout] e5dec69aea2c4fce11d410491198187471f14404091eef86d0537266c932db32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be5a4faa2c9b7bd233a42e054b14b594b06b24b18e4e01ed194d34a6c31eea2a
[INFO] running `Command { std: "docker" "start" "-a" "be5a4faa2c9b7bd233a42e054b14b594b06b24b18e4e01ed194d34a6c31eea2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking rustls-pki-types v1.3.1
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rustls v0.22.2
[INFO] [stderr]    Compiling anyhow v1.0.80
[INFO] [stderr]     Checking destructure_traitobject v0.2.0
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]     Checking unsafe-any-ors v1.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking unsafe-libyaml v0.2.10
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]     Checking webpki-roots v0.26.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking anstream v0.6.13
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking typemap-ors v1.0.0
[INFO] [stderr]     Checking thread-id v4.2.1
[INFO] [stderr]     Checking arc-swap v1.7.0
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]     Checking ordered-float v2.10.1
[INFO] [stderr]     Checking chrono v0.4.35
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]     Checking thiserror v1.0.57
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking rustls-webpki v0.102.2
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking serde_yaml v0.9.32
[INFO] [stderr]     Checking env_filter v0.1.0
[INFO] [stderr]     Checking env_logger v0.11.3
[INFO] [stderr]     Checking log4rs v1.3.0
[INFO] [stderr]     Checking ureq v2.9.6
[INFO] [stderr]     Checking parallel_downloader v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.96s
[INFO] running `Command { std: "docker" "inspect" "be5a4faa2c9b7bd233a42e054b14b594b06b24b18e4e01ed194d34a6c31eea2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be5a4faa2c9b7bd233a42e054b14b594b06b24b18e4e01ed194d34a6c31eea2a", kill_on_drop: false }`
[INFO] [stdout] be5a4faa2c9b7bd233a42e054b14b594b06b24b18e4e01ed194d34a6c31eea2a