[INFO] fetching crate canapi-stdweb 0.1.0...
[INFO] checking canapi-stdweb-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate canapi-stdweb 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate canapi-stdweb 0.1.0 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 canapi-stdweb 0.1.0
[INFO] finished tweaking crates.io crate canapi-stdweb 0.1.0
[INFO] tweaked toml for crates.io crate canapi-stdweb 0.1.0 written to /workspace/builds/worker-6-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 47 packages
[INFO] [stderr]       Adding canapi v0.1.0 (latest: v0.2.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding percent-encoding v1.0.1 (latest: v2.3.1)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding serde_qs v0.4.6 (latest: v0.12.0)
[INFO] [stderr]       Adding sha1 v0.6.1 (latest: v0.10.6)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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 canapi v0.1.0
[INFO] [stderr]   Downloaded serde_qs v0.4.6
[INFO] [stderr]   Downloaded error-chain v0.12.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a8839fafce47f9b1b309516b5a07341c931d66f1ec42ebadf303b61cf498079f
[INFO] running `Command { std: "docker" "start" "-a" "a8839fafce47f9b1b309516b5a07341c931d66f1ec42ebadf303b61cf498079f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8839fafce47f9b1b309516b5a07341c931d66f1ec42ebadf303b61cf498079f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8839fafce47f9b1b309516b5a07341c931d66f1ec42ebadf303b61cf498079f", kill_on_drop: false }`
[INFO] [stdout] a8839fafce47f9b1b309516b5a07341c931d66f1ec42ebadf303b61cf498079f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] e3beb498c8f309da1e5770e1a2f84ca4157bb92e3ae421102af5bac4cd27c886
[INFO] running `Command { std: "docker" "start" "-a" "e3beb498c8f309da1e5770e1a2f84ca4157bb92e3ae421102af5bac4cd27c886", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]    Compiling sha1_smol v1.0.0
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.5
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling stdweb v0.4.20
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling base-x v0.2.11
[INFO] [stderr]     Checking discard v1.0.4
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking data-encoding v2.5.0
[INFO] [stderr]    Compiling sha1 v0.6.1
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking canapi v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde_qs v0.4.6
[INFO] [stderr]    Compiling stdweb-derive v0.5.3
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.9
[INFO] [stderr]     Checking canapi-stdweb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.52s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: stdweb v0.4.20
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "e3beb498c8f309da1e5770e1a2f84ca4157bb92e3ae421102af5bac4cd27c886", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3beb498c8f309da1e5770e1a2f84ca4157bb92e3ae421102af5bac4cd27c886", kill_on_drop: false }`
[INFO] [stdout] e3beb498c8f309da1e5770e1a2f84ca4157bb92e3ae421102af5bac4cd27c886
[INFO] checking canapi-stdweb-0.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate canapi-stdweb 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate canapi-stdweb 0.1.0 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 canapi-stdweb 0.1.0
[INFO] finished tweaking crates.io crate canapi-stdweb 0.1.0
[INFO] tweaked toml for crates.io crate canapi-stdweb 0.1.0 written to /workspace/builds/worker-6-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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2756abe9bf74ead53eccb3f6bc24cc6c2775abe14e41c97f2db8d146f6142045
[INFO] running `Command { std: "docker" "start" "-a" "2756abe9bf74ead53eccb3f6bc24cc6c2775abe14e41c97f2db8d146f6142045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2756abe9bf74ead53eccb3f6bc24cc6c2775abe14e41c97f2db8d146f6142045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2756abe9bf74ead53eccb3f6bc24cc6c2775abe14e41c97f2db8d146f6142045", kill_on_drop: false }`
[INFO] [stdout] 2756abe9bf74ead53eccb3f6bc24cc6c2775abe14e41c97f2db8d146f6142045
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 9df9ab4077958da559fc3db6ba56426db864553c33e016c26c4eaff41da207e8
[INFO] running `Command { std: "docker" "start" "-a" "9df9ab4077958da559fc3db6ba56426db864553c33e016c26c4eaff41da207e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.5
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling sha1_smol v1.0.0
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling stdweb v0.4.20
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling base-x v0.2.11
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]    Compiling sha1 v0.6.1
[INFO] [stderr]     Checking discard v1.0.4
[INFO] [stderr]     Checking data-encoding v2.5.0
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking canapi v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde_qs v0.4.6
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.9
[INFO] [stderr]    Compiling stdweb-derive v0.5.3
[INFO] [stderr]     Checking canapi-stdweb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.68s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: stdweb v0.4.20
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "9df9ab4077958da559fc3db6ba56426db864553c33e016c26c4eaff41da207e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9df9ab4077958da559fc3db6ba56426db864553c33e016c26c4eaff41da207e8", kill_on_drop: false }`
[INFO] [stdout] 9df9ab4077958da559fc3db6ba56426db864553c33e016c26c4eaff41da207e8