[INFO] fetching crate mango-os 0.2.1...
[INFO] checking mango-os-0.2.1 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate mango-os 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mango-os 0.2.1
[INFO] finished tweaking crates.io crate mango-os 0.2.1
[INFO] tweaked toml for crates.io crate mango-os 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mango-os 0.2.1 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 41 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8feb35f3b02fa51fa0fc5d630b556c21fe773fa71dffae819de2affd975934b
[INFO] running `Command { std: "docker" "start" "-a" "a8feb35f3b02fa51fa0fc5d630b556c21fe773fa71dffae819de2affd975934b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8feb35f3b02fa51fa0fc5d630b556c21fe773fa71dffae819de2affd975934b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8feb35f3b02fa51fa0fc5d630b556c21fe773fa71dffae819de2affd975934b", kill_on_drop: false }`
[INFO] [stdout] a8feb35f3b02fa51fa0fc5d630b556c21fe773fa71dffae819de2affd975934b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09dd6bad6f8eba3c66ddd98f676efdf759f4affa0d75be9eb681b0b96d263869
[INFO] running `Command { std: "docker" "start" "-a" "09dd6bad6f8eba3c66ddd98f676efdf759f4affa0d75be9eb681b0b96d263869", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.32
[INFO] [stderr]    Compiling x86 v0.52.0
[INFO] [stderr]     Checking futures-sink v0.3.32
[INFO] [stderr]     Checking futures-task v0.3.32
[INFO] [stderr]     Checking slab v0.4.12
[INFO] [stderr]     Checking bit_field v0.10.3
[INFO] [stderr]     Checking conquer-util v0.3.0
[INFO] [stderr]     Checking bitflags v2.11.1
[INFO] [stderr]     Checking volatile v0.3.0
[INFO] [stderr]     Checking futures-io v0.3.32
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking raw-cpuid v10.7.0
[INFO] [stderr]     Checking spinning_top v0.2.5
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking linked_list_allocator v0.10.6
[INFO] [stderr]     Checking futures-channel v0.3.32
[INFO] [stderr]     Checking conquer-once v0.4.0
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking mango-core v0.2.1
[INFO] [stderr]     Checking uart_16550 v0.3.2
[INFO] [stderr]     Checking mango-hal v0.2.1
[INFO] [stderr]     Checking futures v0.3.32
[INFO] [stderr]     Checking mango-rt v0.2.1
[INFO] [stderr]     Checking mango-boot v0.2.1
[INFO] [stderr]     Checking mango-os v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `mango_boot::*`
[INFO] [stdout]  --> src/boot.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub use mango_boot::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mango_boot::*`
[INFO] [stdout]  --> src/boot.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub use mango_boot::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.87s
[INFO] running `Command { std: "docker" "inspect" "09dd6bad6f8eba3c66ddd98f676efdf759f4affa0d75be9eb681b0b96d263869", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09dd6bad6f8eba3c66ddd98f676efdf759f4affa0d75be9eb681b0b96d263869", kill_on_drop: false }`
[INFO] [stdout] 09dd6bad6f8eba3c66ddd98f676efdf759f4affa0d75be9eb681b0b96d263869