[INFO] cloning repository https://github.com/aaronsouthcombe/rust-chatclient
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aaronsouthcombe/rust-chatclient" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faaronsouthcombe%2Frust-chatclient", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faaronsouthcombe%2Frust-chatclient'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 68009434f0086be8b94f9ccaea6587aa457e1cc9
[INFO] checking aaronsouthcombe/rust-chatclient against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faaronsouthcombe%2Frust-chatclient" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aaronsouthcombe/rust-chatclient 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/aaronsouthcombe/rust-chatclient
[INFO] finished tweaking git repo https://github.com/aaronsouthcombe/rust-chatclient
[INFO] tweaked toml for git repo https://github.com/aaronsouthcombe/rust-chatclient written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/aaronsouthcombe/rust-chatclient 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bca92ac7e9d9d5760f58b797568b561658d3bd1b068c8fdc30f91466e2a7e6ea
[INFO] running `Command { std: "docker" "start" "-a" "bca92ac7e9d9d5760f58b797568b561658d3bd1b068c8fdc30f91466e2a7e6ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bca92ac7e9d9d5760f58b797568b561658d3bd1b068c8fdc30f91466e2a7e6ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bca92ac7e9d9d5760f58b797568b561658d3bd1b068c8fdc30f91466e2a7e6ea", kill_on_drop: false }`
[INFO] [stdout] bca92ac7e9d9d5760f58b797568b561658d3bd1b068c8fdc30f91466e2a7e6ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b5734bcfba2239af033bd38c179e3ab4b8bc97ffb7463b701afc8231a5546f00
[INFO] running `Command { std: "docker" "start" "-a" "b5734bcfba2239af033bd38c179e3ab4b8bc97ffb7463b701afc8231a5546f00", kill_on_drop: false }`
[INFO] [stderr]     Checking pin-project-lite v0.2.12
[INFO] [stderr]     Checking value-bag v1.4.1
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling rustix v0.37.23
[INFO] [stderr]     Checking io-lifetimes v1.0.11
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking polling v2.8.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]     Checking futures-util v0.3.28
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.13s
[INFO] running `Command { std: "docker" "inspect" "b5734bcfba2239af033bd38c179e3ab4b8bc97ffb7463b701afc8231a5546f00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5734bcfba2239af033bd38c179e3ab4b8bc97ffb7463b701afc8231a5546f00", kill_on_drop: false }`
[INFO] [stdout] b5734bcfba2239af033bd38c179e3ab4b8bc97ffb7463b701afc8231a5546f00