[INFO] cloning repository https://github.com/yangrudan/rust_learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yangrudan/rust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangrudan%2Frust_learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangrudan%2Frust_learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 83d5bb30f64911310232a2d89f890b55686128fd
[INFO] checking yangrudan/rust_learn against master#a299aa5df79dd8e5a1405b97ddd7b367b61eecc6 for pr-125923-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangrudan%2Frust_learn" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yangrudan/rust_learn on toolchain a299aa5df79dd8e5a1405b97ddd7b367b61eecc6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a299aa5df79dd8e5a1405b97ddd7b367b61eecc6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yangrudan/rust_learn
[INFO] finished tweaking git repo https://github.com/yangrudan/rust_learn
[INFO] tweaked toml for git repo https://github.com/yangrudan/rust_learn written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yangrudan/rust_learn 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" "+a299aa5df79dd8e5a1405b97ddd7b367b61eecc6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 yangrudan/rust_learn against try#8585d8c57bfa6d7d66340412e06b5611fa79cc61 for pr-125923-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangrudan%2Frust_learn" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yangrudan/rust_learn on toolchain 8585d8c57bfa6d7d66340412e06b5611fa79cc61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8585d8c57bfa6d7d66340412e06b5611fa79cc61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yangrudan/rust_learn
[INFO] finished tweaking git repo https://github.com/yangrudan/rust_learn
[INFO] tweaked toml for git repo https://github.com/yangrudan/rust_learn written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/yangrudan/rust_learn 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" "+8585d8c57bfa6d7d66340412e06b5611fa79cc61" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+8585d8c57bfa6d7d66340412e06b5611fa79cc61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7209978cce8878f502e354f4c0c1c977af3f6fd28ad9bc7879bba776f23eb5df
[INFO] running `Command { std: "docker" "start" "-a" "7209978cce8878f502e354f4c0c1c977af3f6fd28ad9bc7879bba776f23eb5df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7209978cce8878f502e354f4c0c1c977af3f6fd28ad9bc7879bba776f23eb5df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7209978cce8878f502e354f4c0c1c977af3f6fd28ad9bc7879bba776f23eb5df", kill_on_drop: false }`
[INFO] [stdout] 7209978cce8878f502e354f4c0c1c977af3f6fd28ad9bc7879bba776f23eb5df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+8585d8c57bfa6d7d66340412e06b5611fa79cc61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff83b38cf312f4d89185c1b59e543a1ffbb3f9650ad0f448a2fe94188a540d51
[INFO] running `Command { std: "docker" "start" "-a" "ff83b38cf312f4d89185c1b59e543a1ffbb3f9650ad0f448a2fe94188a540d51", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling rust_learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking complex v0.1.0 (/opt/rustwide/workdir/complex/complex)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> complex/complex/src/lib.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl<T> Complex<T> {
[INFO] [stdout]    | ------------------ associated function in this implementation
[INFO] [stdout] 13 |     fn new(re: T, im: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stdout] error: invalid character `'&'` in crate name: `30_&  *  ref`
[INFO] [stdout]   |
[INFO] [stdout]   = help: you can either pass `--crate-name` on the command line or add `#![crate_name="…"]` to set the crate name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid character `' '` in crate name: `30_&  *  ref`
[INFO] [stdout]   |
[INFO] [stdout]   = help: you can either pass `--crate-name` on the command line or add `#![crate_name="…"]` to set the crate name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid character `'*'` in crate name: `30_&  *  ref`
[INFO] [stdout]   |
[INFO] [stdout]   = help: you can either pass `--crate-name` on the command line or add `#![crate_name="…"]` to set the crate name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid character `'?'` in crate name: `21_?`
[INFO] [stdout]   |
[INFO] [stdout]   = help: you can either pass `--crate-name` on the command line or add `#![crate_name="…"]` to set the crate name
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `10_大文件读`
[INFO] [stdout]  --> examples/10_大文件读.rs:1:2
[INFO] [stdout]   |
[INFO] [stdout] 1 |
[INFO] [stdout]   |  ^ consider adding a `main` function to `examples/10_大文件读.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_learn` (example "30_&  *  ref") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_learn` (example "21_?") due to 2 previous errors
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/15_集合.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Int(i32),
[INFO] [stdout]    |     --- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadSheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Int(()),
[INFO] [stdout]    |         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/15_集合.rs:26:11
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Float(f64),
[INFO] [stdout]    |     ----- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadSheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Float(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/15_集合.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Text(String),
[INFO] [stdout]    |     ---- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SpreadSheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Text(()),
[INFO] [stdout]    |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_learn` (example "10_大文件读") due to 2 previous errors
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ff83b38cf312f4d89185c1b59e543a1ffbb3f9650ad0f448a2fe94188a540d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff83b38cf312f4d89185c1b59e543a1ffbb3f9650ad0f448a2fe94188a540d51", kill_on_drop: false }`
[INFO] [stdout] ff83b38cf312f4d89185c1b59e543a1ffbb3f9650ad0f448a2fe94188a540d51