[INFO] fetching crate async-backtrace-attributes 0.2.7...
[INFO] checking async-backtrace-attributes-0.2.7 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate async-backtrace-attributes 0.2.7 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate async-backtrace-attributes 0.2.7 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-backtrace-attributes 0.2.7
[INFO] finished tweaking crates.io crate async-backtrace-attributes 0.2.7
[INFO] tweaked toml for crates.io crate async-backtrace-attributes 0.2.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ffc81ebfd7faaad2c467ace73b54efefe80d57263614bbf8e1ed48438f9534f
[INFO] running `Command { std: "docker" "start" "-a" "3ffc81ebfd7faaad2c467ace73b54efefe80d57263614bbf8e1ed48438f9534f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ffc81ebfd7faaad2c467ace73b54efefe80d57263614bbf8e1ed48438f9534f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ffc81ebfd7faaad2c467ace73b54efefe80d57263614bbf8e1ed48438f9534f", kill_on_drop: false }`
[INFO] [stdout] 3ffc81ebfd7faaad2c467ace73b54efefe80d57263614bbf8e1ed48438f9534f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce30f6bb9f9c062da5da4f7dc939c1b1eed4af5694bf7a080872c1bc6ba7fc96
[INFO] running `Command { std: "docker" "start" "-a" "ce30f6bb9f9c062da5da4f7dc939c1b1eed4af5694bf7a080872c1bc6ba7fc96", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking async-backtrace-attributes v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `IdentAndTypesRenamer` is never constructed
[INFO] [stdout]    --> src/expand.rs:368:8
[INFO] [stdout]     |
[INFO] [stdout] 368 | struct IdentAndTypesRenamer<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncTraitBlockReplacer` is never constructed
[INFO] [stdout]    --> src/expand.rs:397:8
[INFO] [stdout]     |
[INFO] [stdout] 397 | struct AsyncTraitBlockReplacer<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IdentAndTypesRenamer` is never constructed
[INFO] [stdout]    --> src/expand.rs:368:8
[INFO] [stdout]     |
[INFO] [stdout] 368 | struct IdentAndTypesRenamer<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncTraitBlockReplacer` is never constructed
[INFO] [stdout]    --> src/expand.rs:397:8
[INFO] [stdout]     |
[INFO] [stdout] 397 | struct AsyncTraitBlockReplacer<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.13s
[INFO] running `Command { std: "docker" "inspect" "ce30f6bb9f9c062da5da4f7dc939c1b1eed4af5694bf7a080872c1bc6ba7fc96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce30f6bb9f9c062da5da4f7dc939c1b1eed4af5694bf7a080872c1bc6ba7fc96", kill_on_drop: false }`
[INFO] [stdout] ce30f6bb9f9c062da5da4f7dc939c1b1eed4af5694bf7a080872c1bc6ba7fc96
[INFO] checking async-backtrace-attributes-0.2.7 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate async-backtrace-attributes 0.2.7 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate async-backtrace-attributes 0.2.7 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-backtrace-attributes 0.2.7
[INFO] finished tweaking crates.io crate async-backtrace-attributes 0.2.7
[INFO] tweaked toml for crates.io crate async-backtrace-attributes 0.2.7 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa0e7f2ef4f0674923c2a8c1fa1b6a73372ea8fda9899e62e945419d9c0d2bc4
[INFO] running `Command { std: "docker" "start" "-a" "fa0e7f2ef4f0674923c2a8c1fa1b6a73372ea8fda9899e62e945419d9c0d2bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa0e7f2ef4f0674923c2a8c1fa1b6a73372ea8fda9899e62e945419d9c0d2bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa0e7f2ef4f0674923c2a8c1fa1b6a73372ea8fda9899e62e945419d9c0d2bc4", kill_on_drop: false }`
[INFO] [stdout] fa0e7f2ef4f0674923c2a8c1fa1b6a73372ea8fda9899e62e945419d9c0d2bc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0cc33b083e61b620ff5bd6ea7435d79147eb491e986cb264b903bd1b4f64467e
[INFO] running `Command { std: "docker" "start" "-a" "0cc33b083e61b620ff5bd6ea7435d79147eb491e986cb264b903bd1b4f64467e", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking async-backtrace-attributes v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `IdentAndTypesRenamer` is never constructed
[INFO] [stdout]    --> src/expand.rs:368:8
[INFO] [stdout]     |
[INFO] [stdout] 368 | struct IdentAndTypesRenamer<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IdentAndTypesRenamer` is never constructed
[INFO] [stdout]    --> src/expand.rs:368:8
[INFO] [stdout]     |
[INFO] [stdout] 368 | struct IdentAndTypesRenamer<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncTraitBlockReplacer` is never constructed
[INFO] [stdout]    --> src/expand.rs:397:8
[INFO] [stdout]     |
[INFO] [stdout] 397 | struct AsyncTraitBlockReplacer<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncTraitBlockReplacer` is never constructed
[INFO] [stdout]    --> src/expand.rs:397:8
[INFO] [stdout]     |
[INFO] [stdout] 397 | struct AsyncTraitBlockReplacer<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `Command { std: "docker" "inspect" "0cc33b083e61b620ff5bd6ea7435d79147eb491e986cb264b903bd1b4f64467e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cc33b083e61b620ff5bd6ea7435d79147eb491e986cb264b903bd1b4f64467e", kill_on_drop: false }`
[INFO] [stdout] 0cc33b083e61b620ff5bd6ea7435d79147eb491e986cb264b903bd1b4f64467e