[INFO] fetching crate flowstdlib 0.142.0...
[INFO] checking flowstdlib-0.142.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate flowstdlib 0.142.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate flowstdlib 0.142.0 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 flowstdlib 0.142.0
[INFO] finished tweaking crates.io crate flowstdlib 0.142.0
[INFO] tweaked toml for crates.io crate flowstdlib 0.142.0 written to /workspace/builds/worker-5-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 74 packages
[INFO] [stderr]       Adding idna v0.2.3 (latest: v0.5.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding remove_dir_all v0.5.3 (latest: v0.8.2)
[INFO] [stderr]       Adding url v2.2.2 (latest: v2.5.0)
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded simpath v2.5.0
[INFO] [stderr]   Downloaded flowmacro v0.142.0
[INFO] [stderr]   Downloaded curl v0.4.46
[INFO] [stderr]   Downloaded tempdir v0.3.7
[INFO] [stderr]   Downloaded flowcore v0.142.0
[INFO] [stderr]   Downloaded curl-sys v0.4.72+curl-8.6.0
[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] 2661eda0cc3affdca23c4616819bf7d64d095d72b8906740e667dde90855f79a
[INFO] running `Command { std: "docker" "start" "-a" "2661eda0cc3affdca23c4616819bf7d64d095d72b8906740e667dde90855f79a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2661eda0cc3affdca23c4616819bf7d64d095d72b8906740e667dde90855f79a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2661eda0cc3affdca23c4616819bf7d64d095d72b8906740e667dde90855f79a", kill_on_drop: false }`
[INFO] [stdout] 2661eda0cc3affdca23c4616819bf7d64d095d72b8906740e667dde90855f79a
[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] 5ec406966cb6a3d024374b40736b94c0ee93e55026c0c0ca21bbd5e0f404fd4b
[INFO] running `Command { std: "docker" "start" "-a" "5ec406966cb6a3d024374b40736b94c0ee93e55026c0c0ca21bbd5e0f404fd4b", kill_on_drop: false }`
[INFO] [stderr]    Compiling curl v0.4.46
[INFO] [stderr]    Compiling libz-sys v1.1.16
[INFO] [stderr]    Compiling curl-sys v0.4.72+curl-8.6.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling unicode-bidi v0.3.15
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling openssl-sys v0.9.102
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling socket2 v0.5.6
[INFO] [stderr]    Compiling winnow v0.6.5
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.11
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking serde_spanned v0.6.5
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling serde_yaml v0.9.34+deprecated
[INFO] [stderr]    Compiling toml_edit v0.22.9
[INFO] [stderr]     Checking simpath v2.5.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking toml v0.8.12
[INFO] [stderr]     Checking flowcore v0.142.0
[INFO] [stderr]    Compiling flowmacro v0.142.0
[INFO] [stderr]     Checking flowstdlib v0.142.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.35s
[INFO] running `Command { std: "docker" "inspect" "5ec406966cb6a3d024374b40736b94c0ee93e55026c0c0ca21bbd5e0f404fd4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ec406966cb6a3d024374b40736b94c0ee93e55026c0c0ca21bbd5e0f404fd4b", kill_on_drop: false }`
[INFO] [stdout] 5ec406966cb6a3d024374b40736b94c0ee93e55026c0c0ca21bbd5e0f404fd4b
[INFO] checking flowstdlib-0.142.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate flowstdlib 0.142.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate flowstdlib 0.142.0 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 flowstdlib 0.142.0
[INFO] finished tweaking crates.io crate flowstdlib 0.142.0
[INFO] tweaked toml for crates.io crate flowstdlib 0.142.0 written to /workspace/builds/worker-5-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-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] de2d3836bb91d618cf51b320ba43d6b189d295506a044b835188c00a435137d2
[INFO] running `Command { std: "docker" "start" "-a" "de2d3836bb91d618cf51b320ba43d6b189d295506a044b835188c00a435137d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de2d3836bb91d618cf51b320ba43d6b189d295506a044b835188c00a435137d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de2d3836bb91d618cf51b320ba43d6b189d295506a044b835188c00a435137d2", kill_on_drop: false }`
[INFO] [stdout] de2d3836bb91d618cf51b320ba43d6b189d295506a044b835188c00a435137d2
[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] 2a721b5c72f460fc3b5dd4ed2f61ee05ac1ee936d341a03a461f62d265c6bd89
[INFO] running `Command { std: "docker" "start" "-a" "2a721b5c72f460fc3b5dd4ed2f61ee05ac1ee936d341a03a461f62d265c6bd89", kill_on_drop: false }`
[INFO] [stderr]    Compiling curl v0.4.46
[INFO] [stderr]    Compiling libz-sys v1.1.16
[INFO] [stderr]    Compiling curl-sys v0.4.72+curl-8.6.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling unicode-bidi v0.3.15
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling openssl-sys v0.9.102
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling socket2 v0.5.6
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling winnow v0.6.5
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.11
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking serde_spanned v0.6.5
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking simpath v2.5.0
[INFO] [stderr]    Compiling toml_edit v0.22.9
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking toml v0.8.12
[INFO] [stderr]     Checking flowcore v0.142.0
[INFO] [stderr]    Compiling flowmacro v0.142.0
[INFO] [stderr]     Checking flowstdlib v0.142.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.59s
[INFO] running `Command { std: "docker" "inspect" "2a721b5c72f460fc3b5dd4ed2f61ee05ac1ee936d341a03a461f62d265c6bd89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a721b5c72f460fc3b5dd4ed2f61ee05ac1ee936d341a03a461f62d265c6bd89", kill_on_drop: false }`
[INFO] [stdout] 2a721b5c72f460fc3b5dd4ed2f61ee05ac1ee936d341a03a461f62d265c6bd89