[INFO] cloning repository https://github.com/niklabh/RustGreenThreads
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/niklabh/RustGreenThreads" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniklabh%2FRustGreenThreads", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniklabh%2FRustGreenThreads'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7be5265e54fb61ae6ee9fff8e065a890f41d1740
[INFO] checking niklabh/RustGreenThreads against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniklabh%2FRustGreenThreads" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/niklabh/RustGreenThreads on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/niklabh/RustGreenThreads
[INFO] finished tweaking git repo https://github.com/niklabh/RustGreenThreads
[INFO] tweaked toml for git repo https://github.com/niklabh/RustGreenThreads written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/niklabh/RustGreenThreads already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8db464e4d5489a9b5d05ae7da888192dcfdc33c97a4edb756cf475fa490319d1
[INFO] running `Command { std: "docker" "start" "-a" "8db464e4d5489a9b5d05ae7da888192dcfdc33c97a4edb756cf475fa490319d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8db464e4d5489a9b5d05ae7da888192dcfdc33c97a4edb756cf475fa490319d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8db464e4d5489a9b5d05ae7da888192dcfdc33c97a4edb756cf475fa490319d1", kill_on_drop: false }`
[INFO] [stdout] 8db464e4d5489a9b5d05ae7da888192dcfdc33c97a4edb756cf475fa490319d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de121e80230fd6e7a725e63f287acaa72792d8f4c1c33c672f179f22d6029ab5
[INFO] running `Command { std: "docker" "start" "-a" "de121e80230fd6e7a725e63f287acaa72792d8f4c1c33c672f179f22d6029ab5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking RustGreenThread v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]    --> src/main.rs:155:5
[INFO] [stdout]     |
[INFO] [stdout] 155 |       asm!("
[INFO] [stdout]     |       ^---
[INFO] [stdout]     |       |
[INFO] [stdout]     |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]     | |
[INFO] [stdout] 156 | |         mov     %rsp, 0x00($0)
[INFO] [stdout] 157 | |         mov     %r15, 0x08($0)
[INFO] [stdout] 158 | |         mov     %r14, 0x10($0)
[INFO] [stdout] ...   |
[INFO] [stdout] 176 | |     : "alignstack" // needed to work on windows
[INFO] [stdout] 177 | |     );
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]     = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: Rust ABI is unsupported in naked functions
[INFO] [stdout]    --> src/main.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn guard() {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unsupported_naked_functions)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: naked functions must contain a single asm block
[INFO] [stdout]    --> src/main.rs:136:1
[INFO] [stdout]     |
[INFO] [stdout] 136 | / fn guard() {
[INFO] [stdout] 137 | |     unsafe {
[INFO] [stdout] 138 | |         let rt_ptr = RUNTIME as *mut Runtime;
[INFO] [stdout]     | |         ------------------------------------- non-asm is unsupported in naked functions
[INFO] [stdout] 139 | |         let rt = &mut *rt_ptr;
[INFO] [stdout]     | |         ---------------------- non-asm is unsupported in naked functions
[INFO] [stdout] 140 | |         println!("THREAD {} FINISHED.", rt.threads[rt.current].id);
[INFO] [stdout]     | |         ----------------------------------------------------------- non-asm is unsupported in naked functions
[INFO] [stdout] 141 | |         rt.t_return();
[INFO] [stdout]     | |         -------------- non-asm is unsupported in naked functions
[INFO] [stdout] 142 | |     };
[INFO] [stdout] 143 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: Rust ABI is unsupported in naked functions
[INFO] [stdout]    --> src/main.rs:154:11
[INFO] [stdout]     |
[INFO] [stdout] 154 | unsafe fn switch(old: *mut ThreadContext, new: *const ThreadContext) {
[INFO] [stdout]     |           ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: naked functions must contain a single asm block
[INFO] [stdout]    --> src/main.rs:154:1
[INFO] [stdout]     |
[INFO] [stdout] 154 | / unsafe fn switch(old: *mut ThreadContext, new: *const ThreadContext) {
[INFO] [stdout] 155 | |     asm!("
[INFO] [stdout] 156 | |         mov     %rsp, 0x00($0)
[INFO] [stdout] 157 | |         mov     %r15, 0x08($0)
[INFO] [stdout] ...   |
[INFO] [stdout] 177 | |     );
[INFO] [stdout] 178 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]    --> src/main.rs:155:5
[INFO] [stdout]     |
[INFO] [stdout] 155 |       asm!("
[INFO] [stdout]     |       ^---
[INFO] [stdout]     |       |
[INFO] [stdout]     |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]     | |
[INFO] [stdout] 156 | |         mov     %rsp, 0x00($0)
[INFO] [stdout] 157 | |         mov     %r15, 0x08($0)
[INFO] [stdout] 158 | |         mov     %r14, 0x10($0)
[INFO] [stdout] ...   |
[INFO] [stdout] 176 | |     : "alignstack" // needed to work on windows
[INFO] [stdout] 177 | |     );
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]     = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: Rust ABI is unsupported in naked functions
[INFO] [stdout]    --> src/main.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn guard() {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unsupported_naked_functions)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: naked functions must contain a single asm block
[INFO] [stdout]    --> src/main.rs:136:1
[INFO] [stdout]     |
[INFO] [stdout] 136 | / fn guard() {
[INFO] [stdout] 137 | |     unsafe {
[INFO] [stdout] 138 | |         let rt_ptr = RUNTIME as *mut Runtime;
[INFO] [stdout]     | |         ------------------------------------- non-asm is unsupported in naked functions
[INFO] [stdout] 139 | |         let rt = &mut *rt_ptr;
[INFO] [stdout]     | |         ---------------------- non-asm is unsupported in naked functions
[INFO] [stdout] 140 | |         println!("THREAD {} FINISHED.", rt.threads[rt.current].id);
[INFO] [stdout]     | |         ----------------------------------------------------------- non-asm is unsupported in naked functions
[INFO] [stdout] 141 | |         rt.t_return();
[INFO] [stdout]     | |         -------------- non-asm is unsupported in naked functions
[INFO] [stdout] 142 | |     };
[INFO] [stdout] 143 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: Rust ABI is unsupported in naked functions
[INFO] [stdout]    --> src/main.rs:154:11
[INFO] [stdout]     |
[INFO] [stdout] 154 | unsafe fn switch(old: *mut ThreadContext, new: *const ThreadContext) {
[INFO] [stdout]     |           ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: naked functions must contain a single asm block
[INFO] [stdout]    --> src/main.rs:154:1
[INFO] [stdout]     |
[INFO] [stdout] 154 | / unsafe fn switch(old: *mut ThreadContext, new: *const ThreadContext) {
[INFO] [stdout] 155 | |     asm!("
[INFO] [stdout] 156 | |         mov     %rsp, 0x00($0)
[INFO] [stdout] 157 | |         mov     %r15, 0x08($0)
[INFO] [stdout] ...   |
[INFO] [stdout] 177 | |     );
[INFO] [stdout] 178 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #32408 <https://github.com/rust-lang/rust/issues/32408>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `RustGreenThread` due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "de121e80230fd6e7a725e63f287acaa72792d8f4c1c33c672f179f22d6029ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de121e80230fd6e7a725e63f287acaa72792d8f4c1c33c672f179f22d6029ab5", kill_on_drop: false }`
[INFO] [stdout] de121e80230fd6e7a725e63f287acaa72792d8f4c1c33c672f179f22d6029ab5