[INFO] cloning repository https://github.com/xtianbetz/serde-json-rpc-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xtianbetz/serde-json-rpc-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxtianbetz%2Fserde-json-rpc-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxtianbetz%2Fserde-json-rpc-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 989d3c26067737c04894422edb6169672bbab9db
[INFO] checking xtianbetz/serde-json-rpc-example against master#43d9f3859e0204e764161ee085a360274b5f3e9a for pr-97346
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxtianbetz%2Fserde-json-rpc-example" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xtianbetz/serde-json-rpc-example on toolchain 43d9f3859e0204e764161ee085a360274b5f3e9a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xtianbetz/serde-json-rpc-example
[INFO] finished tweaking git repo https://github.com/xtianbetz/serde-json-rpc-example
[INFO] tweaked toml for git repo https://github.com/xtianbetz/serde-json-rpc-example written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/xtianbetz/serde-json-rpc-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e26c89ed3114ab0eebf3d345c2743c9584b22f1d407443c1d430186f97eb33a6
[INFO] running `Command { std: "docker" "start" "-a" "e26c89ed3114ab0eebf3d345c2743c9584b22f1d407443c1d430186f97eb33a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e26c89ed3114ab0eebf3d345c2743c9584b22f1d407443c1d430186f97eb33a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e26c89ed3114ab0eebf3d345c2743c9584b22f1d407443c1d430186f97eb33a6", kill_on_drop: false }`
[INFO] [stdout] e26c89ed3114ab0eebf3d345c2743c9584b22f1d407443c1d430186f97eb33a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+43d9f3859e0204e764161ee085a360274b5f3e9a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbce5ff32d165e9771ec051d2b41a77c2c30f2896ab0a62c30c222898533fa9a
[INFO] running `Command { std: "docker" "start" "-a" "dbce5ff32d165e9771ec051d2b41a77c2c30f2896ab0a62c30c222898533fa9a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking serde-json-rpc-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.04s
[INFO] running `Command { std: "docker" "inspect" "dbce5ff32d165e9771ec051d2b41a77c2c30f2896ab0a62c30c222898533fa9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbce5ff32d165e9771ec051d2b41a77c2c30f2896ab0a62c30c222898533fa9a", kill_on_drop: false }`
[INFO] [stdout] dbce5ff32d165e9771ec051d2b41a77c2c30f2896ab0a62c30c222898533fa9a