[INFO] fetching crate adaptive-barrier 1.0.0...
[INFO] checking adaptive-barrier-1.0.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate adaptive-barrier 1.0.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate adaptive-barrier 1.0.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate adaptive-barrier 1.0.0
[INFO] finished tweaking crates.io crate adaptive-barrier 1.0.0
[INFO] tweaked toml for crates.io crate adaptive-barrier 1.0.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b095f7568595f443578f1eb8a476f6f7a0aaa0f9c6057f6f4e503395a6a6cf32
[INFO] running `Command { std: "docker" "start" "-a" "b095f7568595f443578f1eb8a476f6f7a0aaa0f9c6057f6f4e503395a6a6cf32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b095f7568595f443578f1eb8a476f6f7a0aaa0f9c6057f6f4e503395a6a6cf32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b095f7568595f443578f1eb8a476f6f7a0aaa0f9c6057f6f4e503395a6a6cf32", kill_on_drop: false }`
[INFO] [stdout] b095f7568595f443578f1eb8a476f6f7a0aaa0f9c6057f6f4e503395a6a6cf32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d91103ce0a6abcbcc52d604ec20544a83b533425aa1a472219cb0920ddc0fa6a
[INFO] running `Command { std: "docker" "start" "-a" "d91103ce0a6abcbcc52d604ec20544a83b533425aa1a472219cb0920ddc0fa6a", kill_on_drop: false }`
[INFO] [stderr]     Checking adaptive-barrier v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `thread` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:251:23
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use std::thread::{self, sleep};
[INFO] [stdout]     |                       ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 254 |     use super::*;
[INFO] [stdout]     |         -------- the item `thread` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "d91103ce0a6abcbcc52d604ec20544a83b533425aa1a472219cb0920ddc0fa6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d91103ce0a6abcbcc52d604ec20544a83b533425aa1a472219cb0920ddc0fa6a", kill_on_drop: false }`
[INFO] [stdout] d91103ce0a6abcbcc52d604ec20544a83b533425aa1a472219cb0920ddc0fa6a
[INFO] checking adaptive-barrier-1.0.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate adaptive-barrier 1.0.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate adaptive-barrier 1.0.0 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate adaptive-barrier 1.0.0
[INFO] finished tweaking crates.io crate adaptive-barrier 1.0.0
[INFO] tweaked toml for crates.io crate adaptive-barrier 1.0.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 663a79cfa876fadc29c212c9e161582cdf9dc2bb52029f1b1ab12c0f96f7c053
[INFO] running `Command { std: "docker" "start" "-a" "663a79cfa876fadc29c212c9e161582cdf9dc2bb52029f1b1ab12c0f96f7c053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "663a79cfa876fadc29c212c9e161582cdf9dc2bb52029f1b1ab12c0f96f7c053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "663a79cfa876fadc29c212c9e161582cdf9dc2bb52029f1b1ab12c0f96f7c053", kill_on_drop: false }`
[INFO] [stdout] 663a79cfa876fadc29c212c9e161582cdf9dc2bb52029f1b1ab12c0f96f7c053
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41397cced30e608d2c4963a15eda019919811202d2ffd58308d88b9cab2f4742
[INFO] running `Command { std: "docker" "start" "-a" "41397cced30e608d2c4963a15eda019919811202d2ffd58308d88b9cab2f4742", kill_on_drop: false }`
[INFO] [stderr]     Checking adaptive-barrier v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `thread` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:251:23
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use std::thread::{self, sleep};
[INFO] [stdout]     |                       ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 254 |     use super::*;
[INFO] [stdout]     |         -------- the item `thread` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `JoinHandle<T>`
[INFO] [stdout]    --> src/lib.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |           let t2 = thread::spawn({
[INFO] [stdout]     |  _____________^^___-
[INFO] [stdout] 376 | |             let mut bar = bar.clone();
[INFO] [stdout] 377 | |             let woken = Arc::clone(&woken);
[INFO] [stdout] 378 | |             move || {
[INFO] [stdout] ...   |
[INFO] [stdout] 383 | |             }
[INFO] [stdout] 384 | |         });
[INFO] [stdout]     | |__________- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]    --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1
[INFO] [stdout] help: consider giving `t2` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 375 |         let t2: JoinHandle<T> = thread::spawn({
[INFO] [stdout]     |               +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `JoinHandle<T>`
[INFO] [stdout]    --> src/lib.rs:454:13
[INFO] [stdout]     |
[INFO] [stdout] 454 |           let t2 = thread::spawn({
[INFO] [stdout]     |  _____________^^___-
[INFO] [stdout] 455 | |             let bar = bar.clone();
[INFO] [stdout] 456 | |             move || {
[INFO] [stdout] 457 | |                 // Make sure this one gets into the closure so we destroy it on the panic.
[INFO] [stdout] ...   |
[INFO] [stdout] 462 | |             }
[INFO] [stdout] 463 | |         });
[INFO] [stdout]     | |__________- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]    --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1
[INFO] [stdout] help: consider giving `t2` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 454 |         let t2: JoinHandle<T> = thread::spawn({
[INFO] [stdout]     |               +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `adaptive-barrier` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "41397cced30e608d2c4963a15eda019919811202d2ffd58308d88b9cab2f4742", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41397cced30e608d2c4963a15eda019919811202d2ffd58308d88b9cab2f4742", kill_on_drop: false }`
[INFO] [stdout] 41397cced30e608d2c4963a15eda019919811202d2ffd58308d88b9cab2f4742