[INFO] fetching crate riffle 0.2.0...
[INFO] checking riffle-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate riffle 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate riffle 0.2.0 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 riffle 0.2.0
[INFO] finished tweaking crates.io crate riffle 0.2.0
[INFO] tweaked toml for crates.io crate riffle 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate riffle 0.2.0 already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded onig v6.3.1
[INFO] [stderr]   Downloaded git-version-macro v0.3.5
[INFO] [stderr]   Downloaded shell-escape v0.1.5
[INFO] [stderr]   Downloaded num_threads v0.1.3
[INFO] [stderr]   Downloaded time v0.3.7
[INFO] [stderr]   Downloaded plist v1.3.1
[INFO] [stderr]   Downloaded bytemuck v1.7.3
[INFO] [stderr]   Downloaded rgb v0.8.31
[INFO] [stderr]   Downloaded path_abs v0.5.1
[INFO] [stderr]   Downloaded git2 v0.13.25
[INFO] [stderr]   Downloaded crc32fast v1.3.1
[INFO] [stderr]   Downloaded cc v1.0.72
[INFO] [stderr]   Downloaded onig_sys v69.7.1
[INFO] [stderr]   Downloaded syntect v4.6.0
[INFO] [stderr]   Downloaded ansi_colours v1.1.1
[INFO] [stderr]   Downloaded libz-sys v1.1.3
[INFO] [stderr]   Downloaded libgit2-sys v0.12.26+1.3.0
[INFO] [stderr]   Downloaded bat v0.19.0
[INFO] [stderr]   Downloaded git-version v0.3.5
[INFO] [stderr]   Downloaded sys-info v0.9.1
[INFO] [stderr]   Downloaded bugreport v0.4.1
[INFO] [stderr]   Downloaded clircle v0.3.0
[INFO] [stderr]   Downloaded globset v0.4.8
[INFO] [stderr]   Downloaded grep-cli v0.1.6
[INFO] [stderr]   Downloaded std_prelude v0.2.12
[INFO] [stderr]   Downloaded semver v1.0.5
[INFO] [stderr]   Downloaded shell-words v1.0.0
[INFO] [stderr]   Downloaded line-wrap v0.1.1
[INFO] [stderr]   Downloaded wild v2.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 9a7f03c59c949811b970fdb550c5918f35c91142744b3632b72d09598e588fcc
[INFO] running `Command { std: "docker" "start" "-a" "9a7f03c59c949811b970fdb550c5918f35c91142744b3632b72d09598e588fcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a7f03c59c949811b970fdb550c5918f35c91142744b3632b72d09598e588fcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a7f03c59c949811b970fdb550c5918f35c91142744b3632b72d09598e588fcc", kill_on_drop: false }`
[INFO] [stdout] 9a7f03c59c949811b970fdb550c5918f35c91142744b3632b72d09598e588fcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] bba206e7c110c48aed1eae68fc66e038b74233660e2692d6634c6a5f0b67577f
[INFO] running `Command { std: "docker" "start" "-a" "bba206e7c110c48aed1eae68fc66e038b74233660e2692d6634c6a5f0b67577f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling crc32fast v1.3.1
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking num_threads v0.1.3
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling serde_json v1.0.78
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling semver v1.0.5
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking time v0.3.7
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]    Compiling bugreport v0.4.1
[INFO] [stderr]     Checking bytemuck v1.7.3
[INFO] [stderr]     Checking xml-rs v0.8.4
[INFO] [stderr]     Checking rgb v0.8.31
[INFO] [stderr]     Checking crossterm v0.22.1
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling onig_sys v69.7.1
[INFO] [stderr]    Compiling sys-info v0.9.1
[INFO] [stderr]    Compiling libgit2-sys v0.12.26+1.3.0
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling git-version-macro v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking std_prelude v0.2.12
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking shell-escape v0.1.5
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking path_abs v0.5.1
[INFO] [stderr]     Checking grep-cli v0.1.6
[INFO] [stderr]     Checking git-version v0.3.5
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking ansi_colours v1.1.1
[INFO] [stderr]     Checking content_inspector v0.2.4
[INFO] [stderr]     Checking shell-words v1.0.0
[INFO] [stderr]     Checking wild v2.0.4
[INFO] [stderr]     Checking riffle v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]    Compiling bat v0.19.0
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking onig v6.3.1
[INFO] [stderr]     Checking plist v1.3.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking clircle v0.3.0
[INFO] [stderr]     Checking serde_yaml v0.8.23
[INFO] [stderr]     Checking git2 v0.13.25
[INFO] [stderr]     Checking syntect v4.6.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "bba206e7c110c48aed1eae68fc66e038b74233660e2692d6634c6a5f0b67577f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bba206e7c110c48aed1eae68fc66e038b74233660e2692d6634c6a5f0b67577f", kill_on_drop: false }`
[INFO] [stdout] bba206e7c110c48aed1eae68fc66e038b74233660e2692d6634c6a5f0b67577f
[INFO] checking riffle-0.2.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate riffle 0.2.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate riffle 0.2.0 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 riffle 0.2.0
[INFO] finished tweaking crates.io crate riffle 0.2.0
[INFO] tweaked toml for crates.io crate riffle 0.2.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate riffle 0.2.0 already has a lockfile, it will not be regenerated
[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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 432432b245481af73e46c74cad350a0be9389c6b6378023e5b340a0811009355
[INFO] running `Command { std: "docker" "start" "-a" "432432b245481af73e46c74cad350a0be9389c6b6378023e5b340a0811009355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "432432b245481af73e46c74cad350a0be9389c6b6378023e5b340a0811009355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "432432b245481af73e46c74cad350a0be9389c6b6378023e5b340a0811009355", kill_on_drop: false }`
[INFO] [stdout] 432432b245481af73e46c74cad350a0be9389c6b6378023e5b340a0811009355
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b986ffd0caf33dc76fe88109d9cc386db1b2d0f64228bf5703876959e43cc91e
[INFO] running `Command { std: "docker" "start" "-a" "b986ffd0caf33dc76fe88109d9cc386db1b2d0f64228bf5703876959e43cc91e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling crc32fast v1.3.1
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking num_threads v0.1.3
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling serde_json v1.0.78
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking time v0.3.7
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking xml-rs v0.8.4
[INFO] [stderr]     Checking bytemuck v1.7.3
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]    Compiling bugreport v0.4.1
[INFO] [stderr]    Compiling semver v1.0.5
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking rgb v0.8.31
[INFO] [stderr]     Checking crossterm v0.22.1
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling sys-info v0.9.1
[INFO] [stderr]    Compiling onig_sys v69.7.1
[INFO] [stderr]    Compiling libgit2-sys v0.12.26+1.3.0
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking shell-escape v0.1.5
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking std_prelude v0.2.12
[INFO] [stderr]     Checking grep-cli v0.1.6
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling git-version-macro v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking path_abs v0.5.1
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking ansi_colours v1.1.1
[INFO] [stderr]     Checking content_inspector v0.2.4
[INFO] [stderr]     Checking shell-words v1.0.0
[INFO] [stderr]     Checking wild v2.0.4
[INFO] [stderr]     Checking riffle v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking git-version v0.3.5
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]    Compiling bat v0.19.0
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking onig v6.3.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking plist v1.3.1
[INFO] [stderr]     Checking serde_yaml v0.8.23
[INFO] [stderr]     Checking clircle v0.3.0
[INFO] [stderr]     Checking git2 v0.13.25
[INFO] [stderr]     Checking syntect v4.6.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "b986ffd0caf33dc76fe88109d9cc386db1b2d0f64228bf5703876959e43cc91e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b986ffd0caf33dc76fe88109d9cc386db1b2d0f64228bf5703876959e43cc91e", kill_on_drop: false }`
[INFO] [stdout] b986ffd0caf33dc76fe88109d9cc386db1b2d0f64228bf5703876959e43cc91e