[INFO] cloning repository https://github.com/chalermporn/rust-api-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chalermporn/rust-api-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchalermporn%2Frust-api-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchalermporn%2Frust-api-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ead75cf014d710ba47de311b7367abc641dc12a
[INFO] checking chalermporn/rust-api-demo against master#9748d87dc70a9a6725c5dbd76ce29d04752b4f90 for pr-144156
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchalermporn%2Frust-api-demo" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chalermporn/rust-api-demo
[INFO] finished tweaking git repo https://github.com/chalermporn/rust-api-demo
[INFO] tweaked toml for git repo https://github.com/chalermporn/rust-api-demo written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chalermporn/rust-api-demo on toolchain 9748d87dc70a9a6725c5dbd76ce29d04752b4f90
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9748d87dc70a9a6725c5dbd76ce29d04752b4f90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chalermporn/rust-api-demo 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" "+9748d87dc70a9a6725c5dbd76ce29d04752b4f90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9748d87dc70a9a6725c5dbd76ce29d04752b4f90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4253d89ea0fb91a49ba49a340023c88c94498d8c237fc476a258354ec099c8b0
[INFO] running `Command { std: "docker" "start" "-a" "4253d89ea0fb91a49ba49a340023c88c94498d8c237fc476a258354ec099c8b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4253d89ea0fb91a49ba49a340023c88c94498d8c237fc476a258354ec099c8b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4253d89ea0fb91a49ba49a340023c88c94498d8c237fc476a258354ec099c8b0", kill_on_drop: false }`
[INFO] [stdout] 4253d89ea0fb91a49ba49a340023c88c94498d8c237fc476a258354ec099c8b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9748d87dc70a9a6725c5dbd76ce29d04752b4f90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2bd8609e920c39681c7e49dd99e53a0723ac1e726fa8791970b4f2db3cf0cec
[INFO] running `Command { std: "docker" "start" "-a" "e2bd8609e920c39681c7e49dd99e53a0723ac1e726fa8791970b4f2db3cf0cec", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking rust-api-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Ok(j)
[INFO] [stdout]    |     -- ^ expected `()`, found `String`
[INFO] [stdout]    |     |
[INFO] [stdout]    |     arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout] help: the type constructed contains `std::string::String` due to the type of the argument passed
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Ok(j)
[INFO] [stdout]    |     ^^^-^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        this argument influences the type of `Ok`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> /rustc/9748d87dc70a9a6725c5dbd76ce29d04752b4f90/library/core/src/result.rs:552:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-api-demo` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Ok(j)
[INFO] [stdout]    |     -- ^ expected `()`, found `String`
[INFO] [stdout]    |     |
[INFO] [stdout]    |     arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout] help: the type constructed contains `std::string::String` due to the type of the argument passed
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Ok(j)
[INFO] [stdout]    |     ^^^-^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        this argument influences the type of `Ok`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> /rustc/9748d87dc70a9a6725c5dbd76ce29d04752b4f90/library/core/src/result.rs:552:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-api-demo` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e2bd8609e920c39681c7e49dd99e53a0723ac1e726fa8791970b4f2db3cf0cec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2bd8609e920c39681c7e49dd99e53a0723ac1e726fa8791970b4f2db3cf0cec", kill_on_drop: false }`
[INFO] [stdout] e2bd8609e920c39681c7e49dd99e53a0723ac1e726fa8791970b4f2db3cf0cec