[INFO] cloning repository https://github.com/Gohla/serde_flexitos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Gohla/serde_flexitos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGohla%2Fserde_flexitos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGohla%2Fserde_flexitos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90c86d67a399124d87ffd2141bfaf4d5dd5f98c0
[INFO] checking Gohla/serde_flexitos against master#9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19 for pr-117684-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGohla%2Fserde_flexitos" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Gohla/serde_flexitos on toolchain 9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Gohla/serde_flexitos
[INFO] finished tweaking git repo https://github.com/Gohla/serde_flexitos
[INFO] tweaked toml for git repo https://github.com/Gohla/serde_flexitos written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Gohla/serde_flexitos 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" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57ab5fecbeefb08a0c3e6407d32c85434cedc6616127a29878af96dbb67b39db
[INFO] running `Command { std: "docker" "start" "-a" "57ab5fecbeefb08a0c3e6407d32c85434cedc6616127a29878af96dbb67b39db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57ab5fecbeefb08a0c3e6407d32c85434cedc6616127a29878af96dbb67b39db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57ab5fecbeefb08a0c3e6407d32c85434cedc6616127a29878af96dbb67b39db", kill_on_drop: false }`
[INFO] [stdout] 57ab5fecbeefb08a0c3e6407d32c85434cedc6616127a29878af96dbb67b39db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 504da55657c4bf82985b78c91b5b3d4a0f18402b920bc9ce3cf0ff6be45501bd
[INFO] running `Command { std: "docker" "start" "-a" "504da55657c4bf82985b78c91b5b3d4a0f18402b920bc9ce3cf0ff6be45501bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.190
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling serde_derive v1.0.190
[INFO] [stderr]    Compiling linkme-impl v0.3.17
[INFO] [stderr]     Checking linkme v0.3.17
[INFO] [stderr]     Checking erased-serde v0.3.31
[INFO] [stderr]     Checking serde_flexitos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/generic_wip.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 |   let mut registry = Registry::<dyn Example>::new("Example");
[INFO] [stdout]    |       ----^^^^^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.54s
[INFO] running `Command { std: "docker" "inspect" "504da55657c4bf82985b78c91b5b3d4a0f18402b920bc9ce3cf0ff6be45501bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "504da55657c4bf82985b78c91b5b3d4a0f18402b920bc9ce3cf0ff6be45501bd", kill_on_drop: false }`
[INFO] [stdout] 504da55657c4bf82985b78c91b5b3d4a0f18402b920bc9ce3cf0ff6be45501bd