[INFO] cloning repository https://github.com/a1393323447/tiny_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/a1393323447/tiny_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fa1393323447%2Ftiny_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fa1393323447%2Ftiny_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 058c677bf07eb914e4938fa8243a74a9c816e81f
[INFO] checking a1393323447/tiny_os against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fa1393323447%2Ftiny_os" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/a1393323447/tiny_os on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/a1393323447/tiny_os
[INFO] finished tweaking git repo https://github.com/a1393323447/tiny_os
[INFO] tweaked toml for git repo https://github.com/a1393323447/tiny_os written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/a1393323447/tiny_os 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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking a1393323447/tiny_os against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fa1393323447%2Ftiny_os" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/a1393323447/tiny_os on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/a1393323447/tiny_os
[INFO] finished tweaking git repo https://github.com/a1393323447/tiny_os
[INFO] tweaked toml for git repo https://github.com/a1393323447/tiny_os written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/a1393323447/tiny_os 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded conquer-util v0.3.0
[INFO] [stderr]   Downloaded llvm-tools v0.1.1
[INFO] [stderr]   Downloaded rsdp v2.0.0
[INFO] [stderr]   Downloaded conquer-once v0.3.2
[INFO] [stderr]   Downloaded linked_list_allocator v0.10.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0fe1fba4e084010fc37635502d61dd7c09f403ae02fe64975680f4ba2817ed8
[INFO] running `Command { std: "docker" "start" "-a" "f0fe1fba4e084010fc37635502d61dd7c09f403ae02fe64975680f4ba2817ed8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0fe1fba4e084010fc37635502d61dd7c09f403ae02fe64975680f4ba2817ed8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0fe1fba4e084010fc37635502d61dd7c09f403ae02fe64975680f4ba2817ed8", kill_on_drop: false }`
[INFO] [stdout] f0fe1fba4e084010fc37635502d61dd7c09f403ae02fe64975680f4ba2817ed8
[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 -Ddereferencing_mut_binding" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 911ec77f0321042aa73967eafe03e7efc4356b414fb6b62927fdc0809325c704
[INFO] running `Command { std: "docker" "start" "-a" "911ec77f0321042aa73967eafe03e7efc4356b414fb6b62927fdc0809325c704", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling rustversion v1.0.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.6
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]     Checking volatile v0.4.5
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking conquer-util v0.3.0
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking boot_info v0.1.0 (/opt/rustwide/workdir/boot_info)
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking conquer-once v0.3.2
[INFO] [stderr]    Compiling boot v0.1.0 (/opt/rustwide/workdir/boot)
[INFO] [stderr]     Checking pc-keyboard v0.5.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking llvm-tools v0.1.1
[INFO] [stderr]     Checking xmas-elf v0.8.0
[INFO] [stderr]     Checking tiny_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking rsdp v2.0.0
[INFO] [stderr]     Checking spinning_top v0.2.4
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]     Checking linked_list_allocator v0.10.1
[INFO] [stderr]     Checking x86_64 v0.14.10
[INFO] [stderr]     Checking pic8259 v0.10.2
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]    --> boot/src/main.rs:222:1
[INFO] [stdout]     |
[INFO] [stdout] 222 | / fn panic(info: &PanicInfo) -> ! {
[INFO] [stdout] 223 | |     unsafe {
[INFO] [stdout] 224 | |         logger::LOGGER
[INFO] [stdout] 225 | |             .get()
[INFO] [stdout] ...   |
[INFO] [stdout] 231 | |     }
[INFO] [stdout] 232 | | }
[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/047472f299946caf090d1b5608ae4bd9f0416256/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-19d8bdaf9f223155.rlib
[INFO] [stdout]     = note: second definition in the local crate (`boot`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `boot` (bin "boot" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "911ec77f0321042aa73967eafe03e7efc4356b414fb6b62927fdc0809325c704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "911ec77f0321042aa73967eafe03e7efc4356b414fb6b62927fdc0809325c704", kill_on_drop: false }`
[INFO] [stdout] 911ec77f0321042aa73967eafe03e7efc4356b414fb6b62927fdc0809325c704