[INFO] cloning repository https://github.com/jnowaczek/cc-client
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jnowaczek/cc-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjnowaczek%2Fcc-client", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjnowaczek%2Fcc-client'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11cbe35c32a63fe6f766027dfc5865d431742723
[INFO] checking jnowaczek/cc-client against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjnowaczek%2Fcc-client" "/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/jnowaczek/cc-client 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/jnowaczek/cc-client
[INFO] finished tweaking git repo https://github.com/jnowaczek/cc-client
[INFO] tweaked toml for git repo https://github.com/jnowaczek/cc-client written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jnowaczek/cc-client 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 pin-project-internal v0.4.7
[INFO] [stderr]   Downloaded indexmap v1.3.1
[INFO] [stderr]   Downloaded pin-project v0.4.7
[INFO] [stderr]   Downloaded zip v0.5.4
[INFO] [stderr]   Downloaded tokio v0.2.10
[INFO] [stderr]   Downloaded hyper v0.13.1
[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] 6bbc012e93b9270ccf51f3d412b8e0684e3635bc1bfb83af48e63c5311050fe7
[INFO] running `Command { std: "docker" "start" "-a" "6bbc012e93b9270ccf51f3d412b8e0684e3635bc1bfb83af48e63c5311050fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bbc012e93b9270ccf51f3d412b8e0684e3635bc1bfb83af48e63c5311050fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bbc012e93b9270ccf51f3d412b8e0684e3635bc1bfb83af48e63c5311050fe7", kill_on_drop: false }`
[INFO] [stdout] 6bbc012e93b9270ccf51f3d412b8e0684e3635bc1bfb83af48e63c5311050fe7
[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] bffaba86ee8060922b28741176947bf9412576c7914a0ba44111e14efff9d972
[INFO] running `Command { std: "docker" "start" "-a" "bffaba86ee8060922b28741176947bf9412576c7914a0ba44111e14efff9d972", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling indexmap v1.3.1
[INFO] [stderr]     Checking pin-project-lite v0.1.4
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking http v0.2.0
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]     Checking futures-task v0.3.1
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking miniz_oxide v0.3.5
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking tokio v0.2.10
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking zip v0.5.4
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking h2 v0.2.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.7
[INFO] [stderr]     Checking pin-project v0.4.7
[INFO] [stderr]     Checking hyper v0.13.1
[INFO] [stderr]     Checking cc-client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `REQUEST_URL` is never used
[INFO] [stdout]  --> src/main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const REQUEST_URL: &str = "0.0.0.0:8000";
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `REQUEST_URL` is never used
[INFO] [stdout]  --> src/main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const REQUEST_URL: &str = "0.0.0.0:8000";
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.41s
[INFO] running `Command { std: "docker" "inspect" "bffaba86ee8060922b28741176947bf9412576c7914a0ba44111e14efff9d972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bffaba86ee8060922b28741176947bf9412576c7914a0ba44111e14efff9d972", kill_on_drop: false }`
[INFO] [stdout] bffaba86ee8060922b28741176947bf9412576c7914a0ba44111e14efff9d972
[INFO] checking jnowaczek/cc-client against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjnowaczek%2Fcc-client" "/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/jnowaczek/cc-client 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/jnowaczek/cc-client
[INFO] finished tweaking git repo https://github.com/jnowaczek/cc-client
[INFO] tweaked toml for git repo https://github.com/jnowaczek/cc-client written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jnowaczek/cc-client 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] aca907f72890f690c5fdac308c7ac2c713e97a7c18fce722a2756deca518b0af
[INFO] running `Command { std: "docker" "start" "-a" "aca907f72890f690c5fdac308c7ac2c713e97a7c18fce722a2756deca518b0af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aca907f72890f690c5fdac308c7ac2c713e97a7c18fce722a2756deca518b0af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aca907f72890f690c5fdac308c7ac2c713e97a7c18fce722a2756deca518b0af", kill_on_drop: false }`
[INFO] [stdout] aca907f72890f690c5fdac308c7ac2c713e97a7c18fce722a2756deca518b0af
[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] 6a9d6d266380301bc7594f43fd46e076dc69b42d801d873d16a41ab527159589
[INFO] running `Command { std: "docker" "start" "-a" "6a9d6d266380301bc7594f43fd46e076dc69b42d801d873d16a41ab527159589", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling indexmap v1.3.1
[INFO] [stderr]     Checking pin-project-lite v0.1.4
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking futures-task v0.3.1
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking http v0.2.0
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking miniz_oxide v0.3.5
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking tokio v0.2.10
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking zip v0.5.4
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking h2 v0.2.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.7
[INFO] [stderr]     Checking pin-project v0.4.7
[INFO] [stderr]     Checking hyper v0.13.1
[INFO] [stderr]     Checking cc-client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `REQUEST_URL` is never used
[INFO] [stdout]  --> src/main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const REQUEST_URL: &str = "0.0.0.0:8000";
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `REQUEST_URL` is never used
[INFO] [stdout]  --> src/main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const REQUEST_URL: &str = "0.0.0.0:8000";
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.46s
[INFO] running `Command { std: "docker" "inspect" "6a9d6d266380301bc7594f43fd46e076dc69b42d801d873d16a41ab527159589", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a9d6d266380301bc7594f43fd46e076dc69b42d801d873d16a41ab527159589", kill_on_drop: false }`
[INFO] [stdout] 6a9d6d266380301bc7594f43fd46e076dc69b42d801d873d16a41ab527159589