[INFO] cloning repository https://github.com/classroom-test-v/zcore-shzhxh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/classroom-test-v/zcore-shzhxh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclassroom-test-v%2Fzcore-shzhxh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclassroom-test-v%2Fzcore-shzhxh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fb6bf252fa4737976f63b0d9a5eea544ac7d6de
[INFO] checking classroom-test-v/zcore-shzhxh against try#0cb362313295507a2f4321c0e30cea0168f2fe71 for pr-138961-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclassroom-test-v%2Fzcore-shzhxh" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/classroom-test-v/zcore-shzhxh
[INFO] finished tweaking git repo https://github.com/classroom-test-v/zcore-shzhxh
[INFO] tweaked toml for git repo https://github.com/classroom-test-v/zcore-shzhxh written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/classroom-test-v/zcore-shzhxh on toolchain 0cb362313295507a2f4321c0e30cea0168f2fe71
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/classroom-test-v/zcore-shzhxh 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" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/rcore-os/bitmap-allocator`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/rcore-os/device_tree-rs`
[INFO] [stderr]     Updating git repository `https://github.com/rcore-os/isomorphic_drivers`
[INFO] [stderr]     Updating git repository `https://github.com/DeathWish5/kernel-sync`
[INFO] [stderr]     Updating git repository `https://github.com/elliott10/pci-rs`
[INFO] [stderr]     Updating git repository `https://github.com/rcore-os/rcore-console`
[INFO] [stderr]     Updating git repository `https://github.com/smoltcp-rs/smoltcp`
[INFO] [stderr]     Updating git repository `https://github.com/rcore-os/virtio-drivers`
[INFO] [stderr]     Updating git repository `https://github.com/rcore-os/x86-smpboot`
[INFO] [stderr]     Updating git repository `https://github.com/rustsbi/sbi-rt.git`
[INFO] [stderr]     Updating git repository `https://github.com/DeathWish5/PreemptiveScheduler`
[INFO] [stderr]     Updating git repository `https://github.com/rzswh/region-allocator`
[INFO] [stderr]     Updating git repository `https://github.com/rcore-os/rcore-fs`
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[INFO] [stderr]     Updating git repository `https://github.com/YdrMaster/command-ext.git`
[INFO] [stderr]     Updating git repository `https://github.com/rust-embedded/riscv`
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[INFO] [stderr]     Updating git repository `https://github.com/pleasewhy/unicycle`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdad696f9a44bb2f6a5deb76dca040d8dc2fcc3a1492335ba261eccf82fb8d9b
[INFO] running `Command { std: "docker" "start" "-a" "fdad696f9a44bb2f6a5deb76dca040d8dc2fcc3a1492335ba261eccf82fb8d9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdad696f9a44bb2f6a5deb76dca040d8dc2fcc3a1492335ba261eccf82fb8d9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdad696f9a44bb2f6a5deb76dca040d8dc2fcc3a1492335ba261eccf82fb8d9b", kill_on_drop: false }`
[INFO] [stdout] fdad696f9a44bb2f6a5deb76dca040d8dc2fcc3a1492335ba261eccf82fb8d9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+0cb362313295507a2f4321c0e30cea0168f2fe71" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c721b986f68992749880fa56ea304088f1d42cb6aa114d4ea627fb9d1d837c9c
[INFO] running `Command { std: "docker" "start" "-a" "c721b986f68992749880fa56ea304088f1d42cb6aa114d4ea627fb9d1d837c9c", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.131
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling futures-core v0.3.23
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.9
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking futures-io v0.3.23
[INFO] [stderr]     Checking concurrent-queue v1.2.4
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]    Compiling rustversion v1.0.9
[INFO] [stderr]     Checking raw-cpuid v10.4.0
[INFO] [stderr]     Checking volatile v0.4.5
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]     Checking async-task v4.3.0
[INFO] [stderr]    Compiling sdl2-sys v0.34.5
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking async-lock v2.5.0
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]     Checking volatile v0.3.0
[INFO] [stderr]     Checking managed v0.8.0
[INFO] [stderr]    Compiling paste v1.0.8
[INFO] [stderr]     Checking bitmap-allocator v0.1.0 (https://github.com/rcore-os/bitmap-allocator?rev=88e871a5#88e871a5)
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking async-channel v1.7.1
[INFO] [stderr]     Checking numeric-enum-macro v0.2.0
[INFO] [stderr]     Checking device_tree v1.0.3 (https://github.com/rcore-os/device_tree-rs?rev=2f2e55f#2f2e55fb)
[INFO] [stderr]    Compiling x86 v0.46.0
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling futures-task v0.3.23
[INFO] [stderr]    Compiling trapframe v0.9.0
[INFO] [stderr]     Checking futures-sink v0.3.23
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling futures-util v0.3.23
[INFO] [stderr]    Compiling futures-channel v0.3.23
[INFO] [stderr]     Checking funty v1.2.0
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking wyz v0.4.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking region-alloc v0.1.0 (https://github.com/rzswh/region-allocator?rev=122c7a71#122c7a71)
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stdout] error[E0635]: unknown feature `btree_drain_filter`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/region-allocator-6fbd753802224a3a/122c7a7/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(btree_drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking xmas-elf v0.7.0
[INFO] [stderr]    Compiling async-trait v0.1.57
[INFO] [stdout] error[E0599]: no method named `drain_filter` found for struct `BTreeSet<T, A>` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/region-allocator-6fbd753802224a3a/122c7a7/src/lib.rs:120:14
[INFO] [stdout]     |
[INFO] [stdout] 119 | /         self.regions
[INFO] [stdout] 120 | |             .drain_filter(|r| {
[INFO] [stdout]     | |             -^^^^^^^^^^^^ method not found in `BTreeSet<Region>`
[INFO] [stdout]     | |_____________|
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr] error: could not compile `region-alloc` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c721b986f68992749880fa56ea304088f1d42cb6aa114d4ea627fb9d1d837c9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c721b986f68992749880fa56ea304088f1d42cb6aa114d4ea627fb9d1d837c9c", kill_on_drop: false }`
[INFO] [stdout] c721b986f68992749880fa56ea304088f1d42cb6aa114d4ea627fb9d1d837c9c