[INFO] cloning repository https://github.com/rcore-os/serial-async
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rcore-os/serial-async" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frcore-os%2Fserial-async", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 649bc7352dd3f4af51be7058bea8355a89c7e3a4
[INFO] fixing rcore-os/serial-async against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frcore-os%2Fserial-async" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/rcore-os/serial-async
[INFO] finished tweaking git repo https://github.com/rcore-os/serial-async
[INFO] tweaked toml for git repo https://github.com/rcore-os/serial-async written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rcore-os/serial-async on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rcore-os/serial-async 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] bfe8bdbfee2ca17f3012a1bd0622806ff6b80809ea715732ee6eb76f869fa723
[INFO] running `Command { std: "docker" "start" "bfe8bdbfee2ca17f3012a1bd0622806ff6b80809ea715732ee6eb76f869fa723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "bfe8bdbfee2ca17f3012a1bd0622806ff6b80809ea715732ee6eb76f869fa723" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfe8bdbfee2ca17f3012a1bd0622806ff6b80809ea715732ee6eb76f869fa723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "bfe8bdbfee2ca17f3012a1bd0622806ff6b80809ea715732ee6eb76f869fa723" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]     Checking futures-core v0.3.31
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[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling some-serial v0.1.0 (/opt/rustwide/workdir/some-serial)
[INFO] [stderr]     Checking tokio v1.47.1
[INFO] [stderr]     Checking rdif-base v0.3.5
[INFO] [stderr]     Checking rdif-serial v0.1.3
[INFO] [stderr]     Checking serial-async v0.3.0 (/opt/rustwide/workdir/serial-async)
[INFO] [stdout] warning: unused import: `crate::Mmio`
[INFO] [stdout]  --> some-serial/src/ns16550.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::Mmio;
[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: `crate::Mmio`
[INFO] [stdout]  --> some-serial/src/ns16550.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::Mmio;
[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 variable: `event`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:108:31
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn clean_irq_event(&self, event: IrqEvent) {}
[INFO] [stdout]     |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `baud_rate`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:134:29
[INFO] [stdout]     |
[INFO] [stdout] 134 |     fn set_baud_rate(&self, baud_rate: usize) -> Result<(), ConfigError> {
[INFO] [stdout]     |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_baud_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data_bits`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:138:29
[INFO] [stdout]     |
[INFO] [stdout] 138 |     fn set_data_bits(&self, data_bits: DataBits) -> Result<(), ConfigError> {
[INFO] [stdout]     |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stop_bits`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:142:29
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn set_stop_bits(&self, stop_bits: StopBits) -> Result<(), ConfigError> {
[INFO] [stdout]     |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stop_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parity`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:146:26
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn set_parity(&self, parity: Parity) -> Result<(), ConfigError> {
[INFO] [stdout]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flow_control`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:150:32
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn set_flow_control(&self, flow_control: FlowControl) -> Result<(), ConfigError> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_flow_control`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mmio` is never constructed
[INFO] [stdout]   --> some-serial/src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Mmio(usize);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read` and `write` are never used
[INFO] [stdout]   --> some-serial/src/lib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Mmio {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 15 |     fn read<T>(&self, offset: usize) -> T {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn write<T>(&self, offset: usize, val: T) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `modify` is never used
[INFO] [stdout]   --> some-serial/src/ns16550.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Impl {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     fn modify(&self, offset: usize, f: impl FnOnce(u8) -> u8) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:108:31
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn clean_irq_event(&self, event: IrqEvent) {}
[INFO] [stdout]     |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `baud_rate`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:134:29
[INFO] [stdout]     |
[INFO] [stdout] 134 |     fn set_baud_rate(&self, baud_rate: usize) -> Result<(), ConfigError> {
[INFO] [stdout]     |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_baud_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data_bits`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:138:29
[INFO] [stdout]     |
[INFO] [stdout] 138 |     fn set_data_bits(&self, data_bits: DataBits) -> Result<(), ConfigError> {
[INFO] [stdout]     |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stop_bits`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:142:29
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn set_stop_bits(&self, stop_bits: StopBits) -> Result<(), ConfigError> {
[INFO] [stdout]     |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stop_bits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parity`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:146:26
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn set_parity(&self, parity: Parity) -> Result<(), ConfigError> {
[INFO] [stdout]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flow_control`
[INFO] [stdout]    --> some-serial/src/ns16550.rs:150:32
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn set_flow_control(&self, flow_control: FlowControl) -> Result<(), ConfigError> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_flow_control`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mmio` is never constructed
[INFO] [stdout]   --> some-serial/src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Mmio(usize);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read` and `write` are never used
[INFO] [stdout]   --> some-serial/src/lib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Mmio {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 15 |     fn read<T>(&self, offset: usize) -> T {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn write<T>(&self, offset: usize, val: T) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `modify` is never used
[INFO] [stdout]   --> some-serial/src/ns16550.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Impl {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     fn modify(&self, offset: usize, f: impl FnOnce(u8) -> u8) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[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] [stderr] error: could not compile `some-serial` (test "test") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "bfe8bdbfee2ca17f3012a1bd0622806ff6b80809ea715732ee6eb76f869fa723", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfe8bdbfee2ca17f3012a1bd0622806ff6b80809ea715732ee6eb76f869fa723", kill_on_drop: false }`
[INFO] [stdout] bfe8bdbfee2ca17f3012a1bd0622806ff6b80809ea715732ee6eb76f869fa723
