[INFO] fetching crate gc-sequence 0.2.2...
[INFO] checking gc-sequence-0.2.2 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate gc-sequence 0.2.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate gc-sequence 0.2.2 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 gc-sequence 0.2.2
[INFO] finished tweaking crates.io crate gc-sequence 0.2.2
[INFO] tweaked toml for crates.io crate gc-sequence 0.2.2 written to /workspace/builds/worker-6-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 9 packages to latest compatible versions
[INFO] [stderr]       Adding gc-arena v0.2.2 (latest: v0.5.3)
[INFO] [stderr]       Adding gc-arena-derive v0.2.2 (latest: v0.5.3)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gc-arena-derive v0.2.2
[INFO] [stderr]   Downloaded gc-arena v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a18f59a6b5192838a43ded8dc4921f81563e3fba097cc4ccb7e96c3427c4ed48
[INFO] running `Command { std: "docker" "start" "-a" "a18f59a6b5192838a43ded8dc4921f81563e3fba097cc4ccb7e96c3427c4ed48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a18f59a6b5192838a43ded8dc4921f81563e3fba097cc4ccb7e96c3427c4ed48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a18f59a6b5192838a43ded8dc4921f81563e3fba097cc4ccb7e96c3427c4ed48", kill_on_drop: false }`
[INFO] [stdout] a18f59a6b5192838a43ded8dc4921f81563e3fba097cc4ccb7e96c3427c4ed48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] b5a3557fa506d44abbd0048e6564f2013e2748b5392517dc7722db92cb9b05a7
[INFO] running `Command { std: "docker" "start" "-a" "b5a3557fa506d44abbd0048e6564f2013e2748b5392517dc7722db92cb9b05a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling gc-arena-derive v0.2.2
[INFO] [stderr]     Checking gc-arena v0.2.2
[INFO] [stderr]     Checking gc-sequence v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.06s
[INFO] running `Command { std: "docker" "inspect" "b5a3557fa506d44abbd0048e6564f2013e2748b5392517dc7722db92cb9b05a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5a3557fa506d44abbd0048e6564f2013e2748b5392517dc7722db92cb9b05a7", kill_on_drop: false }`
[INFO] [stdout] b5a3557fa506d44abbd0048e6564f2013e2748b5392517dc7722db92cb9b05a7
[INFO] checking gc-sequence-0.2.2 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate gc-sequence 0.2.2 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate gc-sequence 0.2.2 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 gc-sequence 0.2.2
[INFO] finished tweaking crates.io crate gc-sequence 0.2.2
[INFO] tweaked toml for crates.io crate gc-sequence 0.2.2 written to /workspace/builds/worker-6-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 9 packages to latest compatible versions
[INFO] [stderr]       Adding gc-arena v0.2.2 (latest: v0.5.3)
[INFO] [stderr]       Adding gc-arena-derive v0.2.2 (latest: v0.5.3)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d4c8f1cf1aac058af200bfe5829e92b70f2102a5aa9950539ced209f14303e7a
[INFO] running `Command { std: "docker" "start" "-a" "d4c8f1cf1aac058af200bfe5829e92b70f2102a5aa9950539ced209f14303e7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4c8f1cf1aac058af200bfe5829e92b70f2102a5aa9950539ced209f14303e7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4c8f1cf1aac058af200bfe5829e92b70f2102a5aa9950539ced209f14303e7a", kill_on_drop: false }`
[INFO] [stdout] d4c8f1cf1aac058af200bfe5829e92b70f2102a5aa9950539ced209f14303e7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3f0c2546d48c039f854c1cb9fcf6b4be7b3ed64a52b53164c435200d641f2d7d
[INFO] running `Command { std: "docker" "start" "-a" "3f0c2546d48c039f854c1cb9fcf6b4be7b3ed64a52b53164c435200d641f2d7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling gc-arena-derive v0.2.2
[INFO] [stderr]     Checking gc-arena v0.2.2
[INFO] [stderr]     Checking gc-sequence v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.94s
[INFO] running `Command { std: "docker" "inspect" "3f0c2546d48c039f854c1cb9fcf6b4be7b3ed64a52b53164c435200d641f2d7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f0c2546d48c039f854c1cb9fcf6b4be7b3ed64a52b53164c435200d641f2d7d", kill_on_drop: false }`
[INFO] [stdout] 3f0c2546d48c039f854c1cb9fcf6b4be7b3ed64a52b53164c435200d641f2d7d