[INFO] fetching crate load_feature_bc 0.1.7...
[INFO] checking load_feature_bc-0.1.7 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate load_feature_bc 0.1.7 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate load_feature_bc 0.1.7 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate load_feature_bc 0.1.7
[INFO] finished tweaking crates.io crate load_feature_bc 0.1.7
[INFO] tweaked toml for crates.io crate load_feature_bc 0.1.7 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages
[INFO] [stderr]       Adding permutation v0.2.5 (latest: v0.4.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vector_utils v0.1.5
[INFO] [stderr]   Downloaded permutation v0.2.5
[INFO] [stderr]   Downloaded io_utils v0.3.2
[INFO] [stderr]   Downloaded superslice v1.0.0
[INFO] [stderr]   Downloaded string_utils v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47b391d08e9bf22aeac9ea027c89fb42987d6c489a5205f0f4275fa1cdc58d68
[INFO] running `Command { std: "docker" "start" "-a" "47b391d08e9bf22aeac9ea027c89fb42987d6c489a5205f0f4275fa1cdc58d68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47b391d08e9bf22aeac9ea027c89fb42987d6c489a5205f0f4275fa1cdc58d68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47b391d08e9bf22aeac9ea027c89fb42987d6c489a5205f0f4275fa1cdc58d68", kill_on_drop: false }`
[INFO] [stdout] 47b391d08e9bf22aeac9ea027c89fb42987d6c489a5205f0f4275fa1cdc58d68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 131cce80edb98776b41e0df480abb7affd5093ddb27302529f9a2f5dc4ae06c5
[INFO] running `Command { std: "docker" "start" "-a" "131cce80edb98776b41e0df480abb7affd5093ddb27302529f9a2f5dc4ae06c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]     Checking superslice v1.0.0
[INFO] [stderr]     Checking permutation v0.2.5
[INFO] [stderr]    Compiling lz4-sys v1.9.4
[INFO] [stderr]     Checking vector_utils v0.1.5
[INFO] [stderr]     Checking string_utils v0.1.4
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking lz4 v1.24.0
[INFO] [stderr]     Checking io_utils v0.3.2
[INFO] [stderr]     Checking load_feature_bc v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.34s
[INFO] running `Command { std: "docker" "inspect" "131cce80edb98776b41e0df480abb7affd5093ddb27302529f9a2f5dc4ae06c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "131cce80edb98776b41e0df480abb7affd5093ddb27302529f9a2f5dc4ae06c5", kill_on_drop: false }`
[INFO] [stdout] 131cce80edb98776b41e0df480abb7affd5093ddb27302529f9a2f5dc4ae06c5
[INFO] checking load_feature_bc-0.1.7 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate load_feature_bc 0.1.7 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate load_feature_bc 0.1.7 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate load_feature_bc 0.1.7
[INFO] finished tweaking crates.io crate load_feature_bc 0.1.7
[INFO] tweaked toml for crates.io crate load_feature_bc 0.1.7 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd015c13ec3ec089e868668beec09b9669546c043db6a5b97e8789bf9b858995
[INFO] running `Command { std: "docker" "start" "-a" "bd015c13ec3ec089e868668beec09b9669546c043db6a5b97e8789bf9b858995", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd015c13ec3ec089e868668beec09b9669546c043db6a5b97e8789bf9b858995", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd015c13ec3ec089e868668beec09b9669546c043db6a5b97e8789bf9b858995", kill_on_drop: false }`
[INFO] [stdout] bd015c13ec3ec089e868668beec09b9669546c043db6a5b97e8789bf9b858995
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5148a69e902d4187ded20015ca3eec8c90712314f23978b2501a4eb1e4bad8f9
[INFO] running `Command { std: "docker" "start" "-a" "5148a69e902d4187ded20015ca3eec8c90712314f23978b2501a4eb1e4bad8f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling lz4-sys v1.9.4
[INFO] [stderr]     Checking permutation v0.2.5
[INFO] [stderr]     Checking superslice v1.0.0
[INFO] [stderr]     Checking vector_utils v0.1.5
[INFO] [stderr]     Checking string_utils v0.1.4
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking lz4 v1.24.0
[INFO] [stderr]     Checking io_utils v0.3.2
[INFO] [stderr]     Checking load_feature_bc v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.06s
[INFO] running `Command { std: "docker" "inspect" "5148a69e902d4187ded20015ca3eec8c90712314f23978b2501a4eb1e4bad8f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5148a69e902d4187ded20015ca3eec8c90712314f23978b2501a4eb1e4bad8f9", kill_on_drop: false }`
[INFO] [stdout] 5148a69e902d4187ded20015ca3eec8c90712314f23978b2501a4eb1e4bad8f9