[INFO] fetching crate mpc-protocol 0.5.0...
[INFO] checking mpc-protocol-0.5.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate mpc-protocol 0.5.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate mpc-protocol 0.5.0 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 mpc-protocol 0.5.0
[INFO] finished tweaking crates.io crate mpc-protocol 0.5.0
[INFO] tweaked toml for crates.io crate mpc-protocol 0.5.0 written to /workspace/builds/worker-1-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 79 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded binary-stream v8.3.0
[INFO] [stderr]   Downloaded snow v0.9.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] b6bf34143231239f61bde2c8ecfd9a47b3bd2dcba2eb3a5b4217fda581ab3712
[INFO] running `Command { std: "docker" "start" "-a" "b6bf34143231239f61bde2c8ecfd9a47b3bd2dcba2eb3a5b4217fda581ab3712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6bf34143231239f61bde2c8ecfd9a47b3bd2dcba2eb3a5b4217fda581ab3712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6bf34143231239f61bde2c8ecfd9a47b3bd2dcba2eb3a5b4217fda581ab3712", kill_on_drop: false }`
[INFO] [stdout] b6bf34143231239f61bde2c8ecfd9a47b3bd2dcba2eb3a5b4217fda581ab3712
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7f5545b35974d6b176332e3279a5156b1dcd8fb937c8cd96d092b7f5411d22ac
[INFO] running `Command { std: "docker" "start" "-a" "7f5545b35974d6b176332e3279a5156b1dcd8fb937c8cd96d092b7f5411d22ac", kill_on_drop: false }`
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]    Compiling curve25519-dalek v4.1.2
[INFO] [stderr]    Compiling binary-stream v8.3.0
[INFO] [stderr]    Compiling snow v0.9.6
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking universal-hash v0.5.1
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking aead v0.5.2
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking pem v3.0.3
[INFO] [stderr]     Checking polyval v0.6.2
[INFO] [stderr]     Checking poly1305 v0.8.0
[INFO] [stderr]     Checking chacha20 v0.9.1
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking ctr v0.9.2
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking ghash v0.5.1
[INFO] [stderr]     Checking chacha20poly1305 v0.10.1
[INFO] [stderr]     Checking aes-gcm v0.10.3
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling curve25519-dalek-derive v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking uuid v1.8.0
[INFO] [stderr]     Checking mpc-protocol v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.42s
[INFO] running `Command { std: "docker" "inspect" "7f5545b35974d6b176332e3279a5156b1dcd8fb937c8cd96d092b7f5411d22ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f5545b35974d6b176332e3279a5156b1dcd8fb937c8cd96d092b7f5411d22ac", kill_on_drop: false }`
[INFO] [stdout] 7f5545b35974d6b176332e3279a5156b1dcd8fb937c8cd96d092b7f5411d22ac
[INFO] checking mpc-protocol-0.5.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate mpc-protocol 0.5.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate mpc-protocol 0.5.0 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 mpc-protocol 0.5.0
[INFO] finished tweaking crates.io crate mpc-protocol 0.5.0
[INFO] tweaked toml for crates.io crate mpc-protocol 0.5.0 written to /workspace/builds/worker-1-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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] de3912fc92f7a440a0de2b0f2947b06ab6c83bcb1785d258c622c560b8dd1baf
[INFO] running `Command { std: "docker" "start" "-a" "de3912fc92f7a440a0de2b0f2947b06ab6c83bcb1785d258c622c560b8dd1baf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de3912fc92f7a440a0de2b0f2947b06ab6c83bcb1785d258c622c560b8dd1baf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de3912fc92f7a440a0de2b0f2947b06ab6c83bcb1785d258c622c560b8dd1baf", kill_on_drop: false }`
[INFO] [stdout] de3912fc92f7a440a0de2b0f2947b06ab6c83bcb1785d258c622c560b8dd1baf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] aff5325b806976fac4f8689712c967942c6abcfd1fda54aff87199aedd2d4e79
[INFO] running `Command { std: "docker" "start" "-a" "aff5325b806976fac4f8689712c967942c6abcfd1fda54aff87199aedd2d4e79", kill_on_drop: false }`
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]    Compiling curve25519-dalek v4.1.2
[INFO] [stderr]    Compiling snow v0.9.6
[INFO] [stderr]    Compiling binary-stream v8.3.0
[INFO] [stderr]     Checking universal-hash v0.5.1
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking aead v0.5.2
[INFO] [stderr]     Checking pem v3.0.3
[INFO] [stderr]     Checking polyval v0.6.2
[INFO] [stderr]     Checking poly1305 v0.8.0
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking ctr v0.9.2
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking chacha20 v0.9.1
[INFO] [stderr]     Checking ghash v0.5.1
[INFO] [stderr]     Checking chacha20poly1305 v0.10.1
[INFO] [stderr]     Checking aes-gcm v0.10.3
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling curve25519-dalek-derive v0.1.1
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking uuid v1.8.0
[INFO] [stderr]     Checking mpc-protocol v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.94s
[INFO] running `Command { std: "docker" "inspect" "aff5325b806976fac4f8689712c967942c6abcfd1fda54aff87199aedd2d4e79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aff5325b806976fac4f8689712c967942c6abcfd1fda54aff87199aedd2d4e79", kill_on_drop: false }`
[INFO] [stdout] aff5325b806976fac4f8689712c967942c6abcfd1fda54aff87199aedd2d4e79