[INFO] cloning repository https://github.com/AlecGoncharow/message-passing-framework
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlecGoncharow/message-passing-framework" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecGoncharow%2Fmessage-passing-framework", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecGoncharow%2Fmessage-passing-framework'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e3a90e90700d8baa142255f032aa766c9095ca6
[INFO] checking AlecGoncharow/message-passing-framework against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecGoncharow%2Fmessage-passing-framework" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlecGoncharow/message-passing-framework 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/AlecGoncharow/message-passing-framework
[INFO] finished tweaking git repo https://github.com/AlecGoncharow/message-passing-framework
[INFO] tweaked toml for git repo https://github.com/AlecGoncharow/message-passing-framework written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AlecGoncharow/message-passing-framework 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smallvec v1.5.0
[INFO] [stderr]   Downloaded lock_api v0.4.2
[INFO] [stderr]   Downloaded futures-core v0.3.8
[INFO] [stderr]   Downloaded tokio-macros v0.3.1
[INFO] [stderr]   Downloaded tokio v0.3.4
[INFO] [stderr]   Downloaded syn v1.0.51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 91b37c27e283459a136b9df563487bee64ed4e71e7b24351a1f56ffae4eab83a
[INFO] running `Command { std: "docker" "start" "-a" "91b37c27e283459a136b9df563487bee64ed4e71e7b24351a1f56ffae4eab83a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91b37c27e283459a136b9df563487bee64ed4e71e7b24351a1f56ffae4eab83a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91b37c27e283459a136b9df563487bee64ed4e71e7b24351a1f56ffae4eab83a", kill_on_drop: false }`
[INFO] [stdout] 91b37c27e283459a136b9df563487bee64ed4e71e7b24351a1f56ffae4eab83a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] bdfdf6241c34a9e96fc35121afda66658ac155b4da5e6bf4d47526e5880f7e0e
[INFO] running `Command { std: "docker" "start" "-a" "bdfdf6241c34a9e96fc35121afda66658ac155b4da5e6bf4d47526e5880f7e0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.51
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking smallvec v1.5.0
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling tokio v0.3.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking mio v0.7.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling tokio-macros v0.3.1
[INFO] [stderr]     Checking message-passing-framework v0.1.0 (/opt/rustwide/workdir/message-passing-framework)
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]    --> message-passing-framework/src/message.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |     struct F2 {
[INFO] [stdout]     |            -- fields in this struct
[INFO] [stdout] 155 |         x: f32,
[INFO] [stdout]     |         ^
[INFO] [stdout] 156 |         y: f32,
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `F2` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `d` is never read
[INFO] [stdout]    --> message-passing-framework/src/message.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |     struct Complex {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |         d: [F2; 2],
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Complex` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]     Checking server v0.1.0 (/opt/rustwide/workdir/server)
[INFO] [stderr]     Checking client v0.1.0 (/opt/rustwide/workdir/client)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.91s
[INFO] running `Command { std: "docker" "inspect" "bdfdf6241c34a9e96fc35121afda66658ac155b4da5e6bf4d47526e5880f7e0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdfdf6241c34a9e96fc35121afda66658ac155b4da5e6bf4d47526e5880f7e0e", kill_on_drop: false }`
[INFO] [stdout] bdfdf6241c34a9e96fc35121afda66658ac155b4da5e6bf4d47526e5880f7e0e
[INFO] checking AlecGoncharow/message-passing-framework against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlecGoncharow%2Fmessage-passing-framework" "/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/AlecGoncharow/message-passing-framework 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/AlecGoncharow/message-passing-framework
[INFO] finished tweaking git repo https://github.com/AlecGoncharow/message-passing-framework
[INFO] tweaked toml for git repo https://github.com/AlecGoncharow/message-passing-framework written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/AlecGoncharow/message-passing-framework 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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df3f011ecddd20b4ab78cf5e06e1fb384e0154341f395ad197b40be080aaec89
[INFO] running `Command { std: "docker" "start" "-a" "df3f011ecddd20b4ab78cf5e06e1fb384e0154341f395ad197b40be080aaec89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df3f011ecddd20b4ab78cf5e06e1fb384e0154341f395ad197b40be080aaec89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df3f011ecddd20b4ab78cf5e06e1fb384e0154341f395ad197b40be080aaec89", kill_on_drop: false }`
[INFO] [stdout] df3f011ecddd20b4ab78cf5e06e1fb384e0154341f395ad197b40be080aaec89
[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" "-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] 981b34888ce72a4375f1f24447de8e3df841ea92ef4215a6d9e03c7369baa2ab
[INFO] running `Command { std: "docker" "start" "-a" "981b34888ce72a4375f1f24447de8e3df841ea92ef4215a6d9e03c7369baa2ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling syn v1.0.51
[INFO] [stderr]     Checking smallvec v1.5.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling tokio v0.3.4
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking mio v0.7.6
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling tokio-macros v0.3.1
[INFO] [stderr]     Checking message-passing-framework v0.1.0 (/opt/rustwide/workdir/message-passing-framework)
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]    --> message-passing-framework/src/message.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |     struct F2 {
[INFO] [stdout]     |            -- fields in this struct
[INFO] [stdout] 155 |         x: f32,
[INFO] [stdout]     |         ^
[INFO] [stdout] 156 |         y: f32,
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `F2` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stdout] warning: field `d` is never read
[INFO] [stdout]    --> message-passing-framework/src/message.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |     struct Complex {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |         d: [F2; 2],
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Complex` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking client v0.1.0 (/opt/rustwide/workdir/client)
[INFO] [stderr]     Checking server v0.1.0 (/opt/rustwide/workdir/server)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.04s
[INFO] running `Command { std: "docker" "inspect" "981b34888ce72a4375f1f24447de8e3df841ea92ef4215a6d9e03c7369baa2ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "981b34888ce72a4375f1f24447de8e3df841ea92ef4215a6d9e03c7369baa2ab", kill_on_drop: false }`
[INFO] [stdout] 981b34888ce72a4375f1f24447de8e3df841ea92ef4215a6d9e03c7369baa2ab