[INFO] fetching crate mos-alloc 0.2.0...
[INFO] checking mos-alloc-0.2.0 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate mos-alloc 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate mos-alloc 0.2.0 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3-tc1/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-3-tc1/source/Cargo.toml
[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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ufmt-macros v0.1.1
[INFO] [stderr]   Downloaded ufmt-stdio v0.2.0
[INFO] [stderr]   Downloaded ufmt v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35b92aacbacf648ccb1d6309524c3ab9a3dcd951a7436995035069ba59852dfc
[INFO] running `Command { std: "docker" "start" "-a" "35b92aacbacf648ccb1d6309524c3ab9a3dcd951a7436995035069ba59852dfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35b92aacbacf648ccb1d6309524c3ab9a3dcd951a7436995035069ba59852dfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35b92aacbacf648ccb1d6309524c3ab9a3dcd951a7436995035069ba59852dfc", kill_on_drop: false }`
[INFO] [stdout] 35b92aacbacf648ccb1d6309524c3ab9a3dcd951a7436995035069ba59852dfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0541eea54efcd3a2422b3070e29f74dfc72ee6ce4b0fc5f54d0e91ce4ebf9341
[INFO] running `Command { std: "docker" "start" "-a" "0541eea54efcd3a2422b3070e29f74dfc72ee6ce4b0fc5f54d0e91ce4ebf9341", 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]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking mos-alloc v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling ufmt-macros v0.1.1
[INFO] [stderr]     Checking ufmt v0.1.0
[INFO] [stderr]     Checking ufmt-stdio v0.2.0
[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)]` 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/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] 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mos-alloc` (example "realloc") due to 1 previous error; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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] [stderr] error: could not compile `mos-alloc` (example "heap") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "0541eea54efcd3a2422b3070e29f74dfc72ee6ce4b0fc5f54d0e91ce4ebf9341", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0541eea54efcd3a2422b3070e29f74dfc72ee6ce4b0fc5f54d0e91ce4ebf9341", kill_on_drop: false }`
[INFO] [stdout] 0541eea54efcd3a2422b3070e29f74dfc72ee6ce4b0fc5f54d0e91ce4ebf9341
