[INFO] fetching crate samira 0.1.3...
[INFO] checking samira-0.1.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate samira 0.1.3 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate samira 0.1.3 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 samira 0.1.3
[INFO] finished tweaking crates.io crate samira 0.1.3
[INFO] tweaked toml for crates.io crate samira 0.1.3 written to /workspace/builds/worker-4-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 49 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding rustls v0.22.3 (latest: v0.23.4)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] dbdd355e49087bb3f2aa9bfe2e33456eac4b12ef37f155fedf739fdea34cdb19
[INFO] running `Command { std: "docker" "start" "-a" "dbdd355e49087bb3f2aa9bfe2e33456eac4b12ef37f155fedf739fdea34cdb19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbdd355e49087bb3f2aa9bfe2e33456eac4b12ef37f155fedf739fdea34cdb19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbdd355e49087bb3f2aa9bfe2e33456eac4b12ef37f155fedf739fdea34cdb19", kill_on_drop: false }`
[INFO] [stdout] dbdd355e49087bb3f2aa9bfe2e33456eac4b12ef37f155fedf739fdea34cdb19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 19cc5c6a0e16f107ddc3a1a10d3e9cf9c597f213671c7c12e852472da6154588
[INFO] running `Command { std: "docker" "start" "-a" "19cc5c6a0e16f107ddc3a1a10d3e9cf9c597f213671c7c12e852472da6154588", kill_on_drop: false }`
[INFO] [stderr]     Checking rustls-pki-types v1.4.1
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling rustls v0.22.3
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking webpki-roots v0.26.1
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking rustls-webpki v0.102.2
[INFO] [stderr]     Checking ureq v2.9.6
[INFO] [stderr]     Checking samira v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.89s
[INFO] running `Command { std: "docker" "inspect" "19cc5c6a0e16f107ddc3a1a10d3e9cf9c597f213671c7c12e852472da6154588", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19cc5c6a0e16f107ddc3a1a10d3e9cf9c597f213671c7c12e852472da6154588", kill_on_drop: false }`
[INFO] [stdout] 19cc5c6a0e16f107ddc3a1a10d3e9cf9c597f213671c7c12e852472da6154588
[INFO] checking samira-0.1.3 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate samira 0.1.3 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate samira 0.1.3 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 samira 0.1.3
[INFO] finished tweaking crates.io crate samira 0.1.3
[INFO] tweaked toml for crates.io crate samira 0.1.3 written to /workspace/builds/worker-4-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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c482b1c6f2c62b867421838a09782d93cfe9e60b7e491825ea53103cec911ff4
[INFO] running `Command { std: "docker" "start" "-a" "c482b1c6f2c62b867421838a09782d93cfe9e60b7e491825ea53103cec911ff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c482b1c6f2c62b867421838a09782d93cfe9e60b7e491825ea53103cec911ff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c482b1c6f2c62b867421838a09782d93cfe9e60b7e491825ea53103cec911ff4", kill_on_drop: false }`
[INFO] [stdout] c482b1c6f2c62b867421838a09782d93cfe9e60b7e491825ea53103cec911ff4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 80e45cd117a59b45678a486f4b72610b12cdc99205d49c2d1578260a97375d31
[INFO] running `Command { std: "docker" "start" "-a" "80e45cd117a59b45678a486f4b72610b12cdc99205d49c2d1578260a97375d31", kill_on_drop: false }`
[INFO] [stderr]     Checking rustls-pki-types v1.4.1
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling rustls v0.22.3
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking webpki-roots v0.26.1
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking rustls-webpki v0.102.2
[INFO] [stderr]     Checking ureq v2.9.6
[INFO] [stderr]     Checking samira v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.37s
[INFO] running `Command { std: "docker" "inspect" "80e45cd117a59b45678a486f4b72610b12cdc99205d49c2d1578260a97375d31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80e45cd117a59b45678a486f4b72610b12cdc99205d49c2d1578260a97375d31", kill_on_drop: false }`
[INFO] [stdout] 80e45cd117a59b45678a486f4b72610b12cdc99205d49c2d1578260a97375d31