[INFO] cloning repository https://github.com/peacess/lite_db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/peacess/lite_db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeacess%2Flite_db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeacess%2Flite_db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef93105bef19cd666e171e2abfd1f60568bde319
[INFO] checking peacess/lite_db against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeacess%2Flite_db" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/peacess/lite_db 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 git repo https://github.com/peacess/lite_db
[INFO] finished tweaking git repo https://github.com/peacess/lite_db
[INFO] tweaked toml for git repo https://github.com/peacess/lite_db written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/peacess/lite_db 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]      Locking 1 package
[INFO] [stderr]     Updating lite_db v0.1.4 (/workspace/builds/worker-7-tc1/source) -> v0.1.5
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded jammdb v0.10.0
[INFO] [stderr]   Downloaded page_size v0.5.0
[INFO] [stderr]   Downloaded crossbeam-skiplist v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c4c09629c756b2721098e7b295935ed0219142a32762d921f4d40115b9ac347b
[INFO] running `Command { std: "docker" "start" "-a" "c4c09629c756b2721098e7b295935ed0219142a32762d921f4d40115b9ac347b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4c09629c756b2721098e7b295935ed0219142a32762d921f4d40115b9ac347b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4c09629c756b2721098e7b295935ed0219142a32762d921f4d40115b9ac347b", kill_on_drop: false }`
[INFO] [stdout] c4c09629c756b2721098e7b295935ed0219142a32762d921f4d40115b9ac347b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c9482b9cb1b967bd9d755172abab318b7fd813a89d32a3b4bce510c9fe918bb2
[INFO] running `Command { std: "docker" "start" "-a" "c9482b9cb1b967bd9d755172abab318b7fd813a89d32a3b4bce510c9fe918bb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling serde v1.0.181
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling anyhow v1.0.72
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling crossbeam-skiplist v0.1.1
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]     Checking keccak v0.1.4
[INFO] [stderr]     Checking bumpalo v3.13.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling function_name-proc-macro v0.3.0
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking function_name v0.3.0
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking page_size v0.5.0
[INFO] [stderr]     Checking memmap2 v0.7.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]     Checking jammdb v0.10.0
[INFO] [stderr]    Compiling prost-derive v0.11.9
[INFO] [stderr]     Checking prost v0.11.9
[INFO] [stderr]     Checking lite_db v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `LogDbPos` is imported redundantly
[INFO] [stdout]    --> src/index/bptree.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     use crate::db::LogDbPos;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 145 |
[INFO] [stdout] 146 |     use super::*;
[INFO] [stdout]     |         -------- the item `LogDbPos` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IteratorOptions` is imported redundantly
[INFO] [stdout]    --> src/index/btree.rs:109:21
[INFO] [stdout]     |
[INFO] [stdout] 109 |     use crate::db::{IteratorOptions, LogDbPos};
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 110 |
[INFO] [stdout] 111 |     use super::*;
[INFO] [stdout]     |         -------- the item `IteratorOptions` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `LogDbPos` is imported redundantly
[INFO] [stdout]    --> src/index/btree.rs:109:38
[INFO] [stdout]     |
[INFO] [stdout] 109 |     use crate::db::{IteratorOptions, LogDbPos};
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout] 110 |
[INFO] [stdout] 111 |     use super::*;
[INFO] [stdout]     |         -------- the item `LogDbPos` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fs` is imported redundantly
[INFO] [stdout]   --> src/io_db/mmap.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |     use std::fs;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |     use super::*;
[INFO] [stdout]    |         -------- the item `fs` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `MMapIo` is imported redundantly
[INFO] [stdout]   --> src/io_db/mmap.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     use crate::io_db::MMapIo;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |     use super::*;
[INFO] [stdout]    |         -------- the item `MMapIo` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `merging_lock` is never read
[INFO] [stdout]   --> src/lite/lite.rs:34:16
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct LiteDb {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub(crate) merging_lock: Mutex<()>,
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `merging_lock` is never read
[INFO] [stdout]   --> src/lite/lite.rs:34:16
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct LiteDb {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub(crate) merging_lock: Mutex<()>,
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.05s
[INFO] running `Command { std: "docker" "inspect" "c9482b9cb1b967bd9d755172abab318b7fd813a89d32a3b4bce510c9fe918bb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9482b9cb1b967bd9d755172abab318b7fd813a89d32a3b4bce510c9fe918bb2", kill_on_drop: false }`
[INFO] [stdout] c9482b9cb1b967bd9d755172abab318b7fd813a89d32a3b4bce510c9fe918bb2