[INFO] cloning repository https://github.com/rchaser53/rj
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rchaser53/rj" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frchaser53%2Frj", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frchaser53%2Frj'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b86a60d362bb46fe2362ce65d330f3bfe7bf24b
[INFO] checking rchaser53/rj against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frchaser53%2Frj" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rchaser53/rj on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rchaser53/rj
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/rchaser53/rj
[INFO] tweaked toml for git repo https://github.com/rchaser53/rj written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/rchaser53/rj already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f4dc958509096af57db620e99b750ce6eb2f8cea4ca9bdca4b55d90d3bb01333
[INFO] running `Command { std: "docker" "start" "-a" "f4dc958509096af57db620e99b750ce6eb2f8cea4ca9bdca4b55d90d3bb01333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4dc958509096af57db620e99b750ce6eb2f8cea4ca9bdca4b55d90d3bb01333", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4dc958509096af57db620e99b750ce6eb2f8cea4ca9bdca4b55d90d3bb01333", kill_on_drop: false }`
[INFO] [stdout] f4dc958509096af57db620e99b750ce6eb2f8cea4ca9bdca4b55d90d3bb01333
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f359183f79ba6e2a73147d2f8ec7cf35c00db445578d719689d43a10b5b466b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5f359183f79ba6e2a73147d2f8ec7cf35c00db445578d719689d43a10b5b466b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.55
[INFO] [stderr]    Compiling bumpalo v2.6.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling anyhow v1.0.23
[INFO] [stderr]    Compiling wasm-bindgen v0.2.55
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling sourcefile v0.1.4
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling weedle v0.10.0
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.55
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.55
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.55
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.55
[INFO] [stderr]    Compiling web-sys v0.3.32
[INFO] [stderr]     Checking js-sys v0.3.32
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking r-jvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/context.rs:234:25
[INFO] [stdout]     |
[INFO] [stdout] 234 |                         mem::replace(val, *val + *value as i32);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/context.rs:234:25
[INFO] [stdout]     |
[INFO] [stdout] 234 |                         mem::replace(val, *val + *value as i32);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 58.47s
[INFO] running `Command { std: "docker" "inspect" "5f359183f79ba6e2a73147d2f8ec7cf35c00db445578d719689d43a10b5b466b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f359183f79ba6e2a73147d2f8ec7cf35c00db445578d719689d43a10b5b466b", kill_on_drop: false }`
[INFO] [stdout] 5f359183f79ba6e2a73147d2f8ec7cf35c00db445578d719689d43a10b5b466b