[INFO] cloning repository https://github.com/magnesium-lang/scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/magnesium-lang/scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagnesium-lang%2Fscratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagnesium-lang%2Fscratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 126aac1e82f033f387cc4b0ed74ffc1e23a7797e
[INFO] checking magnesium-lang/scratch against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagnesium-lang%2Fscratch" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/magnesium-lang/scratch on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/magnesium-lang/scratch
[INFO] finished tweaking git repo https://github.com/magnesium-lang/scratch
[INFO] tweaked toml for git repo https://github.com/magnesium-lang/scratch written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/magnesium-lang/scratch already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9ed1f3a8f538c912bd4697407d264b05e96b7a29c141dead9258b5a1124f067
[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" "a9ed1f3a8f538c912bd4697407d264b05e96b7a29c141dead9258b5a1124f067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9ed1f3a8f538c912bd4697407d264b05e96b7a29c141dead9258b5a1124f067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9ed1f3a8f538c912bd4697407d264b05e96b7a29c141dead9258b5a1124f067", kill_on_drop: false }`
[INFO] [stdout] a9ed1f3a8f538c912bd4697407d264b05e96b7a29c141dead9258b5a1124f067
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2a8f28d2f514a347d91b4d23b0e0fac29e9b76b006e3d05e47a0b8e4c1f6fac2
[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" "2a8f28d2f514a347d91b4d23b0e0fac29e9b76b006e3d05e47a0b8e4c1f6fac2", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking move-test v0.1.0 (/opt/rustwide/workdir/move-test)
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking compose-test v0.1.0 (/opt/rustwide/workdir/compose-test)
[INFO] [stdout] error: functions with the "rust-call" ABI must take a single non-self argument that is a tuple
[INFO] [stdout]   --> compose-test/src/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     extern "rust-call" fn call_once(self, args: String) -> Self::Output {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: functions with the "rust-call" ABI must take a single non-self argument that is a tuple
[INFO] [stdout]   --> compose-test/src/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     extern "rust-call" fn call_once(self, args: String) -> Self::Output {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: functions with the "rust-call" ABI must take a single non-self argument that is a tuple
[INFO] [stdout]   --> compose-test/src/main.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     extern "rust-call" fn call_mut(&mut self, args: String) -> Self::Output {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: functions with the "rust-call" ABI must take a single non-self argument that is a tuple
[INFO] [stdout]   --> compose-test/src/main.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     extern "rust-call" fn call_mut(&mut self, args: String) -> Self::Output {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compose-test`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2a8f28d2f514a347d91b4d23b0e0fac29e9b76b006e3d05e47a0b8e4c1f6fac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a8f28d2f514a347d91b4d23b0e0fac29e9b76b006e3d05e47a0b8e4c1f6fac2", kill_on_drop: false }`
[INFO] [stdout] 2a8f28d2f514a347d91b4d23b0e0fac29e9b76b006e3d05e47a0b8e4c1f6fac2