[INFO] fetching crate imperator-save 0.4.2...
[INFO] checking imperator-save-0.4.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate imperator-save 0.4.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate imperator-save 0.4.2 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 imperator-save 0.4.2
[INFO] finished tweaking crates.io crate imperator-save 0.4.2
[INFO] tweaked toml for crates.io crate imperator-save 0.4.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate imperator-save 0.4.2 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jomini_derive v0.2.2
[INFO] [stderr]   Downloaded attohttpc v0.23.1
[INFO] [stderr]   Downloaded libdeflater v0.11.0
[INFO] [stderr]   Downloaded jomini v0.20.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.74
[INFO] [stderr]   Downloaded libdeflate-sys v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 84b2880c2e3d3b0da52c4cb4e16253f2461c6dcced0f18928643ff7536630440
[INFO] running `Command { std: "docker" "start" "-a" "84b2880c2e3d3b0da52c4cb4e16253f2461c6dcced0f18928643ff7536630440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84b2880c2e3d3b0da52c4cb4e16253f2461c6dcced0f18928643ff7536630440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84b2880c2e3d3b0da52c4cb4e16253f2461c6dcced0f18928643ff7536630440", kill_on_drop: false }`
[INFO] [stdout] 84b2880c2e3d3b0da52c4cb4e16253f2461c6dcced0f18928643ff7536630440
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] eb63c256d37fcd3d95b380f34bf2dea34ee22334e49fc4631384e25c2c408fb6
[INFO] running `Command { std: "docker" "start" "-a" "eb63c256d37fcd3d95b380f34bf2dea34ee22334e49fc4631384e25c2c408fb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.138
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling serde v1.0.138
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling imperator-save v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling openssl v0.10.40
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling openssl-sys v0.9.74
[INFO] [stderr]     Checking zip v0.6.2
[INFO] [stderr]     Checking unicode-normalization v0.1.21
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling jomini_derive v0.2.2
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking attohttpc v0.23.1
[INFO] [stderr]     Checking jomini v0.20.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.90s
[INFO] running `Command { std: "docker" "inspect" "eb63c256d37fcd3d95b380f34bf2dea34ee22334e49fc4631384e25c2c408fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb63c256d37fcd3d95b380f34bf2dea34ee22334e49fc4631384e25c2c408fb6", kill_on_drop: false }`
[INFO] [stdout] eb63c256d37fcd3d95b380f34bf2dea34ee22334e49fc4631384e25c2c408fb6
[INFO] checking imperator-save-0.4.2 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate imperator-save 0.4.2 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate imperator-save 0.4.2 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 imperator-save 0.4.2
[INFO] finished tweaking crates.io crate imperator-save 0.4.2
[INFO] tweaked toml for crates.io crate imperator-save 0.4.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate imperator-save 0.4.2 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 9b9a672ff55da0e513fa6cbca0fd4a53d9b256d6939c0502c6241f1ced199519
[INFO] running `Command { std: "docker" "start" "-a" "9b9a672ff55da0e513fa6cbca0fd4a53d9b256d6939c0502c6241f1ced199519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b9a672ff55da0e513fa6cbca0fd4a53d9b256d6939c0502c6241f1ced199519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b9a672ff55da0e513fa6cbca0fd4a53d9b256d6939c0502c6241f1ced199519", kill_on_drop: false }`
[INFO] [stdout] 9b9a672ff55da0e513fa6cbca0fd4a53d9b256d6939c0502c6241f1ced199519
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 00e10ff589e6eef9e5be019ff3f59f9ae120cfabb9bb3796a59d5e97a8510a72
[INFO] running `Command { std: "docker" "start" "-a" "00e10ff589e6eef9e5be019ff3f59f9ae120cfabb9bb3796a59d5e97a8510a72", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling serde_derive v1.0.138
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling serde v1.0.138
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]    Compiling imperator-save v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling openssl v0.10.40
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]    Compiling openssl-sys v0.9.74
[INFO] [stderr]     Checking zip v0.6.2
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking unicode-normalization v0.1.21
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling jomini_derive v0.2.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking attohttpc v0.23.1
[INFO] [stderr]     Checking jomini v0.20.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.83s
[INFO] running `Command { std: "docker" "inspect" "00e10ff589e6eef9e5be019ff3f59f9ae120cfabb9bb3796a59d5e97a8510a72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00e10ff589e6eef9e5be019ff3f59f9ae120cfabb9bb3796a59d5e97a8510a72", kill_on_drop: false }`
[INFO] [stdout] 00e10ff589e6eef9e5be019ff3f59f9ae120cfabb9bb3796a59d5e97a8510a72