[INFO] fetching crate async_cell 0.2.3...
[INFO] checking async_cell-0.2.3 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate async_cell 0.2.3 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate async_cell 0.2.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate async_cell 0.2.3
[INFO] tweaked toml for crates.io crate async_cell 0.2.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate async_cell 0.2.3 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate async_cell 0.2.3 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf7965f618083fb589f38655140557d0a319d9a9f58e3b44d0dec3a51c6fa44b
[INFO] running `Command { std: "docker" "start" "-a" "bf7965f618083fb589f38655140557d0a319d9a9f58e3b44d0dec3a51c6fa44b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf7965f618083fb589f38655140557d0a319d9a9f58e3b44d0dec3a51c6fa44b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf7965f618083fb589f38655140557d0a319d9a9f58e3b44d0dec3a51c6fa44b", kill_on_drop: false }`
[INFO] [stdout] bf7965f618083fb589f38655140557d0a319d9a9f58e3b44d0dec3a51c6fa44b
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1386094490d7cc300f6ae05fe780429f89f9bd816aec698df389479b7df514b4
[INFO] running `Command { std: "docker" "start" "-a" "1386094490d7cc300f6ae05fe780429f89f9bd816aec698df389479b7df514b4", kill_on_drop: false }`
[INFO] [stderr]     Checking async_cell v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/internal.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub trait CellInner {
[INFO] [stdout]    |           --------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn new(value: State<Self::Value>) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/internal.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub trait CellInner {
[INFO] [stdout]    |           --------- associated function in this trait
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn new(value: State<Self::Value>) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]  --> tests/utils.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct LoomWaker(loom::sync::Notify);
[INFO] [stdout]   |                  ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:25:37
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let notify = Arc::new(LoomWaker(loom::sync::Notify::new()));
[INFO] [stdout]    |                                     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     loom::thread::spawn(|| block_on(future));
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout]  3 + use std::thread;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `thread`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 20 -     loom::thread::spawn(|| block_on(future));
[INFO] [stdout] 20 +     thread::spawn(|| block_on(future));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     loom::model(move || {
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async_cell` (test "utils") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]  --> tests/cell.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use loom::thread::yield_now;
[INFO] [stdout]   |     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]  --> tests/utils.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct LoomWaker(loom::sync::Notify);
[INFO] [stdout]   |                  ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:25:37
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let notify = Arc::new(LoomWaker(loom::sync::Notify::new()));
[INFO] [stdout]    |                                     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     loom::thread::spawn(|| block_on(future));
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout]  3 + use std::thread;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `thread`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 20 -     loom::thread::spawn(|| block_on(future));
[INFO] [stdout] 20 +     thread::spawn(|| block_on(future));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `loom`
[INFO] [stdout]   --> tests/utils.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     loom::model(move || {
[INFO] [stdout]    |     ^^^^ use of unresolved module or unlinked crate `loom`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `loom`, use `cargo add loom` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async_cell` (test "cell") due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "1386094490d7cc300f6ae05fe780429f89f9bd816aec698df389479b7df514b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1386094490d7cc300f6ae05fe780429f89f9bd816aec698df389479b7df514b4", kill_on_drop: false }`
[INFO] [stdout] 1386094490d7cc300f6ae05fe780429f89f9bd816aec698df389479b7df514b4