[INFO] fetching crate mime-rs 0.3.0...
[INFO] checking mime-rs-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate mime-rs 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate mime-rs 0.3.0 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 mime-rs 0.3.0
[INFO] finished tweaking crates.io crate mime-rs 0.3.0
[INFO] tweaked toml for crates.io crate mime-rs 0.3.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages
[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 cxxbridge-macro v1.0.120
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.120
[INFO] [stderr]   Downloaded link-cplusplus v1.0.9
[INFO] [stderr]   Downloaded scratch v1.0.7
[INFO] [stderr]   Downloaded cxx-build v1.0.120
[INFO] [stderr]   Downloaded cxx v1.0.120
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a46163323cdea0641b70183ed83a79a9d9253a625c9b5e7a399dbcb0bdecb86e
[INFO] running `Command { std: "docker" "start" "-a" "a46163323cdea0641b70183ed83a79a9d9253a625c9b5e7a399dbcb0bdecb86e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a46163323cdea0641b70183ed83a79a9d9253a625c9b5e7a399dbcb0bdecb86e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a46163323cdea0641b70183ed83a79a9d9253a625c9b5e7a399dbcb0bdecb86e", kill_on_drop: false }`
[INFO] [stdout] a46163323cdea0641b70183ed83a79a9d9253a625c9b5e7a399dbcb0bdecb86e
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e77b1ce171aee1e291c38ff9c4a39c728e264fc3c0f9d204a5f2c48bd2b1857
[INFO] running `Command { std: "docker" "start" "-a" "4e77b1ce171aee1e291c38ff9c4a39c728e264fc3c0f9d204a5f2c48bd2b1857", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling link-cplusplus v1.0.9
[INFO] [stderr]    Compiling scratch v1.0.7
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.120
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling cxx v1.0.120
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling cxx-build v1.0.120
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.120
[INFO] [stderr]    Compiling mime-rs v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: mime-rs@0.3.0: Compiler version doesn't include clang or GCC: "c++" "--version"
[INFO] [stderr] warning: mime-rs@0.3.0: Compiler version doesn't include clang or GCC: "c++" "--version"
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 36.57s
[INFO] running `Command { std: "docker" "inspect" "4e77b1ce171aee1e291c38ff9c4a39c728e264fc3c0f9d204a5f2c48bd2b1857", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e77b1ce171aee1e291c38ff9c4a39c728e264fc3c0f9d204a5f2c48bd2b1857", kill_on_drop: false }`
[INFO] [stdout] 4e77b1ce171aee1e291c38ff9c4a39c728e264fc3c0f9d204a5f2c48bd2b1857
[INFO] checking mime-rs-0.3.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate mime-rs 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate mime-rs 0.3.0 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 mime-rs 0.3.0
[INFO] finished tweaking crates.io crate mime-rs 0.3.0
[INFO] tweaked toml for crates.io crate mime-rs 0.3.0 written to /workspace/builds/worker-0-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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63c289471c9fe2b7a76316fa4b1c041e952f325a9a2a15980e0bd632444df654
[INFO] running `Command { std: "docker" "start" "-a" "63c289471c9fe2b7a76316fa4b1c041e952f325a9a2a15980e0bd632444df654", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63c289471c9fe2b7a76316fa4b1c041e952f325a9a2a15980e0bd632444df654", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63c289471c9fe2b7a76316fa4b1c041e952f325a9a2a15980e0bd632444df654", kill_on_drop: false }`
[INFO] [stdout] 63c289471c9fe2b7a76316fa4b1c041e952f325a9a2a15980e0bd632444df654
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad6b64cadc5856d2e4959cd36c747223b67a111d078e1f7806380233cd3165ca
[INFO] running `Command { std: "docker" "start" "-a" "ad6b64cadc5856d2e4959cd36c747223b67a111d078e1f7806380233cd3165ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling scratch v1.0.7
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.120
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling link-cplusplus v1.0.9
[INFO] [stderr]    Compiling cxx v1.0.120
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling cxx-build v1.0.120
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.120
[INFO] [stderr]    Compiling mime-rs v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: mime-rs@0.3.0: Compiler version doesn't include clang or GCC: "c++" "--version"
[INFO] [stderr] warning: mime-rs@0.3.0: Compiler version doesn't include clang or GCC: "c++" "--version"
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 33.55s
[INFO] running `Command { std: "docker" "inspect" "ad6b64cadc5856d2e4959cd36c747223b67a111d078e1f7806380233cd3165ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad6b64cadc5856d2e4959cd36c747223b67a111d078e1f7806380233cd3165ca", kill_on_drop: false }`
[INFO] [stdout] ad6b64cadc5856d2e4959cd36c747223b67a111d078e1f7806380233cd3165ca