[INFO] cloning repository https://github.com/jmccrystal/nostd-alloc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmccrystal/nostd-alloc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmccrystal%2Fnostd-alloc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmccrystal%2Fnostd-alloc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 39f85e8bab07cc902ae06873e5f9c4f5fe7e676f
[INFO] checking jmccrystal/nostd-alloc against master#3350c1eb3fd8fe1bee1ed4c76944d707bd256876 for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmccrystal%2Fnostd-alloc" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmccrystal/nostd-alloc on toolchain 3350c1eb3fd8fe1bee1ed4c76944d707bd256876
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/jmccrystal/nostd-alloc
[INFO] finished tweaking git repo https://github.com/jmccrystal/nostd-alloc
[INFO] tweaked toml for git repo https://github.com/jmccrystal/nostd-alloc written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jmccrystal/nostd-alloc 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" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: toolchain
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 831ebc6e930853a9e156f5c2dc680dfdd8775d8f33ba77b51d4069c14bb046d6
[INFO] running `Command { std: "docker" "start" "-a" "831ebc6e930853a9e156f5c2dc680dfdd8775d8f33ba77b51d4069c14bb046d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "831ebc6e930853a9e156f5c2dc680dfdd8775d8f33ba77b51d4069c14bb046d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "831ebc6e930853a9e156f5c2dc680dfdd8775d8f33ba77b51d4069c14bb046d6", kill_on_drop: false }`
[INFO] [stdout] 831ebc6e930853a9e156f5c2dc680dfdd8775d8f33ba77b51d4069c14bb046d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 844a58758313ffcabc5c0d04f56cafac2e5b5737745c2ba0c779801c940fd96e
[INFO] running `Command { std: "docker" "start" "-a" "844a58758313ffcabc5c0d04f56cafac2e5b5737745c2ba0c779801c940fd96e", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: toolchain
[INFO] [stderr]     Checking allocator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::array::IntoIter`
[INFO] [stdout]  --> src/collections/vec.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::array::IntoIter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:58:1
[INFO] [stdout]    |
[INFO] [stdout] 58 | / pub fn panic(info: &PanicInfo) -> ! {
[INFO] [stdout] 59 | |     if let Some(location) = info.location() {
[INFO] [stdout] 60 | |         print("Panic occurred in file ");
[INFO] [stdout] 61 | |         print(location.file());
[INFO] [stdout] ...  |
[INFO] [stdout] 67 | |     loop {}
[INFO] [stdout] 68 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]    = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/3350c1eb3fd8fe1bee1ed4c76944d707bd256876/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-5024342751ec4fae.rlib
[INFO] [stdout]    = note: second definition in the local crate (`allocator`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `allocator` (bin "allocator" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `core::array::IntoIter`
[INFO] [stdout]  --> src/collections/vec.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::array::IntoIter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ptr`
[INFO] [stdout]   --> src/allocator.rs:66:30
[INFO] [stdout]    |
[INFO] [stdout] 66 |     unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_ptr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `layout`
[INFO] [stdout]   --> src/allocator.rs:66:44
[INFO] [stdout]    |
[INFO] [stdout] 66 |     unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_layout`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `as_mut_slice` is never used
[INFO] [stdout]   --> src/collections/vec.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl<T> Vec<T> {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn as_mut_slice(&mut self) -> &mut [T] {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinkedList` is never constructed
[INFO] [stdout]  --> src/collections/linked_list.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct LinkedList {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `println` is never used
[INFO] [stdout]   --> src/io.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub trait Printable {
[INFO] [stdout]    |           --------- method in this trait
[INFO] [stdout] 27 |     fn print(&self);
[INFO] [stdout] 28 |     fn println(&self) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "844a58758313ffcabc5c0d04f56cafac2e5b5737745c2ba0c779801c940fd96e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "844a58758313ffcabc5c0d04f56cafac2e5b5737745c2ba0c779801c940fd96e", kill_on_drop: false }`
[INFO] [stdout] 844a58758313ffcabc5c0d04f56cafac2e5b5737745c2ba0c779801c940fd96e