[INFO] fetching crate tsyncp 0.3.0...
[INFO] checking tsyncp-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate tsyncp 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate tsyncp 0.3.0 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 tsyncp 0.3.0
[INFO] finished tweaking crates.io crate tsyncp 0.3.0
[INFO] tweaked toml for crates.io crate tsyncp 0.3.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate tsyncp 0.3.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.37
[INFO] [stderr]   Downloaded dummy v0.4.1
[INFO] [stderr]   Downloaded tracing-attributes v0.1.20
[INFO] [stderr]   Downloaded prost-derive v0.10.1
[INFO] [stderr]   Downloaded snafu-derive v0.7.0
[INFO] [stderr]   Downloaded snafu v0.7.0
[INFO] [stderr]   Downloaded prost v0.10.1
[INFO] [stderr]   Downloaded fake v2.4.3
[INFO] [stderr]   Downloaded color-spantrace v0.2.0
[INFO] [stderr]   Downloaded regex v1.5.5
[INFO] [stderr]   Downloaded color-eyre v0.6.1
[INFO] [stderr]   Downloaded libc v0.2.123
[INFO] [stderr]   Downloaded syn v1.0.91
[INFO] [stderr]   Downloaded backtrace v0.3.64
[INFO] [stderr]   Downloaded tracing v0.1.33
[INFO] [stderr]   Downloaded tokio-util v0.7.1
[INFO] [stderr]   Downloaded tracing-core v0.1.25
[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] bdaba842557cc9ab0b9fabbf5524fb92bc4aed6ec64e023e38505e135b7d89ca
[INFO] running `Command { std: "docker" "start" "-a" "bdaba842557cc9ab0b9fabbf5524fb92bc4aed6ec64e023e38505e135b7d89ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdaba842557cc9ab0b9fabbf5524fb92bc4aed6ec64e023e38505e135b7d89ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdaba842557cc9ab0b9fabbf5524fb92bc4aed6ec64e023e38505e135b7d89ca", kill_on_drop: false }`
[INFO] [stdout] bdaba842557cc9ab0b9fabbf5524fb92bc4aed6ec64e023e38505e135b7d89ca
[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] 07f19ac45985557f08a2bedb5f60f7ed5202d1a0b310f5b3207d43201626a101
[INFO] running `Command { std: "docker" "start" "-a" "07f19ac45985557f08a2bedb5f60f7ed5202d1a0b310f5b3207d43201626a101", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking tracing-core v0.1.25
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking tracing-subscriber v0.3.11
[INFO] [stderr]     Checking owo-colors v3.3.0
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling snafu-derive v0.7.0
[INFO] [stderr]    Compiling prost-derive v0.10.1
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking tracing v0.1.33
[INFO] [stderr]     Checking tracing-error v0.2.0
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking color-spantrace v0.2.0
[INFO] [stderr]     Checking prost v0.10.1
[INFO] [stderr]     Checking color-eyre v0.6.1
[INFO] [stderr]     Checking snafu v0.7.0
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling dummy v0.4.1
[INFO] [stderr]     Checking fake v2.4.3
[INFO] [stderr]     Checking tokio-util v0.7.1
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking tsyncp v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.13s
[INFO] running `Command { std: "docker" "inspect" "07f19ac45985557f08a2bedb5f60f7ed5202d1a0b310f5b3207d43201626a101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07f19ac45985557f08a2bedb5f60f7ed5202d1a0b310f5b3207d43201626a101", kill_on_drop: false }`
[INFO] [stdout] 07f19ac45985557f08a2bedb5f60f7ed5202d1a0b310f5b3207d43201626a101
[INFO] checking tsyncp-0.3.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate tsyncp 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate tsyncp 0.3.0 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 tsyncp 0.3.0
[INFO] finished tweaking crates.io crate tsyncp 0.3.0
[INFO] tweaked toml for crates.io crate tsyncp 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate tsyncp 0.3.0 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-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] b28252b8040bddd805735899338530fde31fc3511a04ea87b65e2df63da10a28
[INFO] running `Command { std: "docker" "start" "-a" "b28252b8040bddd805735899338530fde31fc3511a04ea87b65e2df63da10a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b28252b8040bddd805735899338530fde31fc3511a04ea87b65e2df63da10a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b28252b8040bddd805735899338530fde31fc3511a04ea87b65e2df63da10a28", kill_on_drop: false }`
[INFO] [stdout] b28252b8040bddd805735899338530fde31fc3511a04ea87b65e2df63da10a28
[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] 9b524255e0af94f6d300069289238018314c38377f432a1e94a2753a35f5b9dd
[INFO] running `Command { std: "docker" "start" "-a" "9b524255e0af94f6d300069289238018314c38377f432a1e94a2753a35f5b9dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking tracing-core v0.1.25
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking owo-colors v3.3.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]     Checking tracing-subscriber v0.3.11
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling snafu-derive v0.7.0
[INFO] [stderr]    Compiling prost-derive v0.10.1
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking tracing v0.1.33
[INFO] [stderr]     Checking tracing-error v0.2.0
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling dummy v0.4.1
[INFO] [stderr]     Checking color-spantrace v0.2.0
[INFO] [stderr]     Checking color-eyre v0.6.1
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking prost v0.10.1
[INFO] [stderr]     Checking snafu v0.7.0
[INFO] [stderr]     Checking fake v2.4.3
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking tokio-util v0.7.1
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking tsyncp v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.63s
[INFO] running `Command { std: "docker" "inspect" "9b524255e0af94f6d300069289238018314c38377f432a1e94a2753a35f5b9dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b524255e0af94f6d300069289238018314c38377f432a1e94a2753a35f5b9dd", kill_on_drop: false }`
[INFO] [stdout] 9b524255e0af94f6d300069289238018314c38377f432a1e94a2753a35f5b9dd