[INFO] fetching crate mos-alloc 0.2.0... [INFO] building mos-alloc-0.2.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1 [INFO] extracting crate mos-alloc 0.2.0 into /workspace/builds/worker-6-tc2/source [INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml [INFO] started tweaking crates.io crate mos-alloc 0.2.0 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate mos-alloc 0.2.0 [INFO] tweaked toml for crates.io crate mos-alloc 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate mos-alloc 0.2.0 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate mos-alloc 0.2.0 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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 06854835d77fa6bda43578b79869a624e16e179a80fb71bd03e4e99e9915c293 [INFO] running `Command { std: "docker" "start" "-a" "06854835d77fa6bda43578b79869a624e16e179a80fb71bd03e4e99e9915c293", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "06854835d77fa6bda43578b79869a624e16e179a80fb71bd03e4e99e9915c293", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "06854835d77fa6bda43578b79869a624e16e179a80fb71bd03e4e99e9915c293", kill_on_drop: false }` [INFO] [stdout] 06854835d77fa6bda43578b79869a624e16e179a80fb71bd03e4e99e9915c293 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] feeb53931afe2a8d531b0de958dd0a4725e1f78c3084f984ec6a0b8e61f5226d [INFO] running `Command { std: "docker" "start" "-a" "feeb53931afe2a8d531b0de958dd0a4725e1f78c3084f984ec6a0b8e61f5226d", kill_on_drop: false }` [INFO] [stderr] Compiling mos-alloc v0.2.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [optimized + debuginfo] target(s) in 0.21s [INFO] running `Command { std: "docker" "inspect" "feeb53931afe2a8d531b0de958dd0a4725e1f78c3084f984ec6a0b8e61f5226d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "feeb53931afe2a8d531b0de958dd0a4725e1f78c3084f984ec6a0b8e61f5226d", kill_on_drop: false }` [INFO] [stdout] feeb53931afe2a8d531b0de958dd0a4725e1f78c3084f984ec6a0b8e61f5226d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4bd6d44e9cf35c3b54732943372476c2fbc03ff004c82d1da965a9cb28e7791f [INFO] running `Command { std: "docker" "start" "-a" "4bd6d44e9cf35c3b54732943372476c2fbc03ff004c82d1da965a9cb28e7791f", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.36 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Compiling syn v1.0.85 [INFO] [stderr] Compiling libc v0.2.112 [INFO] [stderr] Compiling ufmt-write v0.1.0 [INFO] [stderr] Compiling quote v1.0.14 [INFO] [stderr] Compiling ufmt-macros v0.1.1 [INFO] [stderr] Compiling ufmt v0.1.0 [INFO] [stderr] Compiling ufmt-stdio v0.2.0 [INFO] [stderr] Compiling mos-alloc v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> examples/heap.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(start)] [INFO] [stdout] | ^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: removed in 1.86.0; see for more information [INFO] [stdout] = note: not portable enough and never RFC'd [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> examples/realloc.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(start)] [INFO] [stdout] | ^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: removed in 1.86.0; see for more information [INFO] [stdout] = note: not portable enough and never RFC'd [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `start` in this scope [INFO] [stdout] --> examples/realloc.rs:22:3 [INFO] [stdout] | [INFO] [stdout] 22 | #[start] [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `start` in this scope [INFO] [stdout] --> examples/heap.rs:20:3 [INFO] [stdout] | [INFO] [stdout] 20 | #[start] [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unwinding panics are not supported without std [INFO] [stdout] | [INFO] [stdout] = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding [INFO] [stdout] = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `string::String` [INFO] [stdout] --> examples/realloc.rs:8:13 [INFO] [stdout] | [INFO] [stdout] 8 | use alloc::{string::String, vec::Vec}; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unwinding panics are not supported without std [INFO] [stdout] | [INFO] [stdout] = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding [INFO] [stdout] = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `default_alloc_error_handler` has been stable since 1.68.0 and no longer requires an attribute to enable [INFO] [stdout] --> examples/heap.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(default_alloc_error_handler)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0580]: `main` function has wrong type [INFO] [stdout] --> examples/heap.rs:21:1 [INFO] [stdout] | [INFO] [stdout] 21 | fn main(_argc: isize, _argv: *const *const u8) -> isize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ incorrect number of function parameters [INFO] [stdout] | [INFO] [stdout] = note: expected signature `fn() -> ()` [INFO] [stdout] found signature `fn(isize, *const *const u8) -> isize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `default_alloc_error_handler` has been stable since 1.68.0 and no longer requires an attribute to enable [INFO] [stdout] --> examples/realloc.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(default_alloc_error_handler)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0580]: `main` function has wrong type [INFO] [stdout] --> examples/realloc.rs:23:1 [INFO] [stdout] | [INFO] [stdout] 23 | fn main(_argc: isize, _argv: *const *const u8) -> isize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ incorrect number of function parameters [INFO] [stdout] | [INFO] [stdout] = note: expected signature `fn() -> ()` [INFO] [stdout] found signature `fn(isize, *const *const u8) -> isize` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0557, E0580. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0557`. [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vec` [INFO] [stdout] --> examples/realloc.rs:38:13 [INFO] [stdout] | [INFO] [stdout] 38 | let vec = DATA [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_vec` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0557, E0580. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0557`. [INFO] [stdout] [INFO] [stderr] error: could not compile `mos-alloc` (example "heap") due to 4 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `mos-alloc` (example "realloc") due to 4 previous errors; 3 warnings emitted [INFO] [stdout] error: linking with `cc` failed: exit status: 1 [INFO] [stdout] | [INFO] [stdout] = note: "cc" "-m64" "<2 object files omitted>" "-Wl,--as-needed" "-Wl,-Bstatic" "/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-*.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-L" "/tmp/rustcIBolSc/raw-dylibs" "-B/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/mos_alloc-c05b9213944c4c92" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs" [INFO] [stdout] = note: some arguments are omitted. use `--verbose` to show all linker arguments [INFO] [stdout] = note: rust-lld: error: undefined hidden symbol: __rustc::__rg_oom [INFO] [stdout] >>> referenced by 5ygmxdvoe96cu6dv946vbutwu [INFO] [stdout] >>> /opt/rustwide/target/debug/deps/mos_alloc-c05b9213944c4c92.5ygmxdvoe96cu6dv946vbutwu.rcgu.o:(__rustc::__rust_alloc_error_handler) [INFO] [stdout] collect2: error: ld returned 1 exit status [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mos-alloc` (lib test) due to 1 previous error [INFO] running `Command { std: "docker" "inspect" "4bd6d44e9cf35c3b54732943372476c2fbc03ff004c82d1da965a9cb28e7791f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4bd6d44e9cf35c3b54732943372476c2fbc03ff004c82d1da965a9cb28e7791f", kill_on_drop: false }` [INFO] [stdout] 4bd6d44e9cf35c3b54732943372476c2fbc03ff004c82d1da965a9cb28e7791f