[INFO] fetching crate loom 0.7.1...
[INFO] checking loom-0.7.1 against master#35936c4839dd272646394779d151e060d0f6b3ac for pr-122960-1
[INFO] extracting crate loom 0.7.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate loom 0.7.1 on toolchain 35936c4839dd272646394779d151e060d0f6b3ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate loom 0.7.1
[INFO] finished tweaking crates.io crate loom 0.7.1
[INFO] tweaked toml for crates.io crate loom 0.7.1 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" "+35936c4839dd272646394779d151e060d0f6b3ac" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded matchers v0.1.0
[INFO] [stderr]   Downloaded generator v0.7.5
[INFO] [stderr]   Downloaded scoped-tls v1.0.1
[INFO] [stderr]   Downloaded rustversion v1.0.14
[INFO] [stderr]   Downloaded regex-syntax v0.6.29
[INFO] [stderr]   Downloaded windows v0.48.0
[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" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03b576c5682dd322f2373ffb61d201fc1ccaf928d60a41ebb11346ffafdc6d83
[INFO] running `Command { std: "docker" "start" "-a" "03b576c5682dd322f2373ffb61d201fc1ccaf928d60a41ebb11346ffafdc6d83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03b576c5682dd322f2373ffb61d201fc1ccaf928d60a41ebb11346ffafdc6d83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03b576c5682dd322f2373ffb61d201fc1ccaf928d60a41ebb11346ffafdc6d83", kill_on_drop: false }`
[INFO] [stdout] 03b576c5682dd322f2373ffb61d201fc1ccaf928d60a41ebb11346ffafdc6d83
[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" "+35936c4839dd272646394779d151e060d0f6b3ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce979a21e4453a31d5c43c061b03e686bafaf487c81b3087e3a7c263cdd84423
[INFO] running `Command { std: "docker" "start" "-a" "ce979a21e4453a31d5c43c061b03e686bafaf487c81b3087e3a7c263cdd84423", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]    Compiling syn v2.0.55
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]    Compiling generator v0.7.5
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking loom v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `generator` is imported redundantly
[INFO] [stdout]  --> src/rt/scheduler.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use generator::{self, Generator, Gn};
[INFO] [stdout]   |                 ^^^^ the item `generator` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `generator` is imported redundantly
[INFO] [stdout]  --> src/rt/scheduler.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use generator::{self, Generator, Gn};
[INFO] [stdout]   |                 ^^^^ the item `generator` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/rt/thread.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Blocked(Location),
[INFO] [stdout]    |     ------- ^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[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] 79 |     Blocked(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/rt/thread.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Blocked(Location),
[INFO] [stdout]    |     ------- ^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[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] 79 |     Blocked(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.45s
[INFO] running `Command { std: "docker" "inspect" "ce979a21e4453a31d5c43c061b03e686bafaf487c81b3087e3a7c263cdd84423", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce979a21e4453a31d5c43c061b03e686bafaf487c81b3087e3a7c263cdd84423", kill_on_drop: false }`
[INFO] [stdout] ce979a21e4453a31d5c43c061b03e686bafaf487c81b3087e3a7c263cdd84423