[INFO] fetching crate alerts 0.1.1...
[INFO] testing alerts-0.1.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate alerts 0.1.1 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate alerts 0.1.1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alerts 0.1.1
[INFO] finished tweaking crates.io crate alerts 0.1.1
[INFO] tweaked toml for crates.io crate alerts 0.1.1 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdee8f92877c1657181f3b0a08b73737222e536df637687e1c26f6744da57355
[INFO] running `Command { std: "docker" "start" "-a" "fdee8f92877c1657181f3b0a08b73737222e536df637687e1c26f6744da57355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdee8f92877c1657181f3b0a08b73737222e536df637687e1c26f6744da57355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdee8f92877c1657181f3b0a08b73737222e536df637687e1c26f6744da57355", kill_on_drop: false }`
[INFO] [stdout] fdee8f92877c1657181f3b0a08b73737222e536df637687e1c26f6744da57355
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 631390744d8c2188cbd08eaae6113ac8d9bd57c56c80548f9c6847243d425121
[INFO] running `Command { std: "docker" "start" "-a" "631390744d8c2188cbd08eaae6113ac8d9bd57c56c80548f9c6847243d425121", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling alerts v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `head`
[INFO] [stdout]   --> src/alert.rs:33:18
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn alert_message(head: &str,msg: &str,_wflags: i32) -> Result<(), Error> {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_head`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "631390744d8c2188cbd08eaae6113ac8d9bd57c56c80548f9c6847243d425121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "631390744d8c2188cbd08eaae6113ac8d9bd57c56c80548f9c6847243d425121", kill_on_drop: false }`
[INFO] [stdout] 631390744d8c2188cbd08eaae6113ac8d9bd57c56c80548f9c6847243d425121
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38bbd7e16ff97057573c991c4bed27855d5ae996d2ef596f4cbf19362911563f
[INFO] running `Command { std: "docker" "start" "-a" "38bbd7e16ff97057573c991c4bed27855d5ae996d2ef596f4cbf19362911563f", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `head`
[INFO] [stdout]   --> src/alert.rs:33:18
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn alert_message(head: &str,msg: &str,_wflags: i32) -> Result<(), Error> {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_head`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling alerts v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `head`
[INFO] [stdout]   --> src/alert.rs:33:18
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn alert_message(head: &str,msg: &str,_wflags: i32) -> Result<(), Error> {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_head`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "38bbd7e16ff97057573c991c4bed27855d5ae996d2ef596f4cbf19362911563f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38bbd7e16ff97057573c991c4bed27855d5ae996d2ef596f4cbf19362911563f", kill_on_drop: false }`
[INFO] [stdout] 38bbd7e16ff97057573c991c4bed27855d5ae996d2ef596f4cbf19362911563f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6ec4487cda2f13e9c689a996caf8112511eef6a32c09df000728978a1b99ab11
[INFO] running `Command { std: "docker" "start" "-a" "6ec4487cda2f13e9c689a996caf8112511eef6a32c09df000728978a1b99ab11", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `head`
[INFO] [stderr]   --> src/alert.rs:33:18
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn alert_message(head: &str,msg: &str,_wflags: i32) -> Result<(), Error> {
[INFO] [stderr]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_head`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `alerts` (lib) generated 1 warning
[INFO] [stderr] warning: `alerts` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/alert-aad463b9626e8528)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests alert
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/alert.rs - (line 6) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/alert.rs - (line 6) stdout ----
[INFO] [stdout] error[E0463]: can't find crate for `alerts`
[INFO] [stdout]  --> src/alert.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate alerts;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/alert.rs - (line 6)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "6ec4487cda2f13e9c689a996caf8112511eef6a32c09df000728978a1b99ab11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ec4487cda2f13e9c689a996caf8112511eef6a32c09df000728978a1b99ab11", kill_on_drop: false }`
[INFO] [stdout] 6ec4487cda2f13e9c689a996caf8112511eef6a32c09df000728978a1b99ab11