[INFO] fetching crate omnipaxos_storage 0.2.2...
[INFO] checking omnipaxos_storage-0.2.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate omnipaxos_storage 0.2.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate omnipaxos_storage 0.2.2 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 omnipaxos_storage 0.2.2
[INFO] finished tweaking crates.io crate omnipaxos_storage 0.2.2
[INFO] tweaked toml for crates.io crate omnipaxos_storage 0.2.2 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]     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]      Locking 41 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding memmap2 v0.5.10 (latest: v0.9.4)
[INFO] [stderr]       Adding page_size v0.4.2 (latest: v0.6.0)
[INFO] [stderr]       Adding parking_lot v0.11.2 (latest: v0.12.1)
[INFO] [stderr]       Adding parking_lot_core v0.8.6 (latest: v0.9.9)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding zerocopy v0.6.6 (latest: v0.7.32)
[INFO] [stderr]       Adding zerocopy-derive v0.6.6 (latest: v0.7.32)
[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 crc32c v0.6.5
[INFO] [stderr]   Downloaded omnipaxos v0.2.2
[INFO] [stderr]   Downloaded page_size v0.4.2
[INFO] [stderr]   Downloaded zerocopy v0.6.6
[INFO] [stderr]   Downloaded commitlog v0.2.0
[INFO] [stderr]   Downloaded omnipaxos_macros v0.1.3
[INFO] [stderr]   Downloaded zerocopy-derive v0.6.6
[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] 861dc08e9133d39eeb40ff2dffd0b3a34abd829405519723fe3275c4ac25a2c7
[INFO] running `Command { std: "docker" "start" "-a" "861dc08e9133d39eeb40ff2dffd0b3a34abd829405519723fe3275c4ac25a2c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "861dc08e9133d39eeb40ff2dffd0b3a34abd829405519723fe3275c4ac25a2c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "861dc08e9133d39eeb40ff2dffd0b3a34abd829405519723fe3275c4ac25a2c7", kill_on_drop: false }`
[INFO] [stdout] 861dc08e9133d39eeb40ff2dffd0b3a34abd829405519723fe3275c4ac25a2c7
[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] 1dfe50f043aea5f6fc44185c59c570cf093d19929110e5226c066266b89515f1
[INFO] running `Command { std: "docker" "start" "-a" "1dfe50f043aea5f6fc44185c59c570cf093d19929110e5226c066266b89515f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]     Checking page_size v0.4.2
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking sled v0.34.7
[INFO] [stderr]    Compiling crc32c v0.6.5
[INFO] [stderr]     Checking commitlog v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling zerocopy-derive v0.6.6
[INFO] [stderr]    Compiling omnipaxos_macros v0.1.3
[INFO] [stderr]     Checking zerocopy v0.6.6
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking omnipaxos v0.2.2
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking omnipaxos_storage v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/persistent_storage.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::{iter::FromIterator, marker::PhantomData};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/persistent_storage.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::{iter::FromIterator, marker::PhantomData};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.15s
[INFO] running `Command { std: "docker" "inspect" "1dfe50f043aea5f6fc44185c59c570cf093d19929110e5226c066266b89515f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dfe50f043aea5f6fc44185c59c570cf093d19929110e5226c066266b89515f1", kill_on_drop: false }`
[INFO] [stdout] 1dfe50f043aea5f6fc44185c59c570cf093d19929110e5226c066266b89515f1
[INFO] checking omnipaxos_storage-0.2.2 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate omnipaxos_storage 0.2.2 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate omnipaxos_storage 0.2.2 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 omnipaxos_storage 0.2.2
[INFO] finished tweaking crates.io crate omnipaxos_storage 0.2.2
[INFO] tweaked toml for crates.io crate omnipaxos_storage 0.2.2 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] 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] 30f9417dac6ce43478a980500a0dbfdb8b82827debd36ccfe23d85e26008c19b
[INFO] running `Command { std: "docker" "start" "-a" "30f9417dac6ce43478a980500a0dbfdb8b82827debd36ccfe23d85e26008c19b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30f9417dac6ce43478a980500a0dbfdb8b82827debd36ccfe23d85e26008c19b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30f9417dac6ce43478a980500a0dbfdb8b82827debd36ccfe23d85e26008c19b", kill_on_drop: false }`
[INFO] [stdout] 30f9417dac6ce43478a980500a0dbfdb8b82827debd36ccfe23d85e26008c19b
[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] 5cfa59a5335ba22fd04dee45763b9e8479c31dae3e52cefcd8809250e7889798
[INFO] running `Command { std: "docker" "start" "-a" "5cfa59a5335ba22fd04dee45763b9e8479c31dae3e52cefcd8809250e7889798", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking page_size v0.4.2
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking sled v0.34.7
[INFO] [stderr]    Compiling crc32c v0.6.5
[INFO] [stderr]     Checking commitlog v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling omnipaxos_macros v0.1.3
[INFO] [stderr]    Compiling zerocopy-derive v0.6.6
[INFO] [stderr]     Checking zerocopy v0.6.6
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking omnipaxos v0.2.2
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking omnipaxos_storage v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/persistent_storage.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::{iter::FromIterator, marker::PhantomData};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/persistent_storage.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::{iter::FromIterator, marker::PhantomData};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.25s
[INFO] running `Command { std: "docker" "inspect" "5cfa59a5335ba22fd04dee45763b9e8479c31dae3e52cefcd8809250e7889798", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cfa59a5335ba22fd04dee45763b9e8479c31dae3e52cefcd8809250e7889798", kill_on_drop: false }`
[INFO] [stdout] 5cfa59a5335ba22fd04dee45763b9e8479c31dae3e52cefcd8809250e7889798