[INFO] cloning repository https://github.com/dekellum/olio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dekellum/olio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdekellum%2Folio", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdekellum%2Folio'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] daef3741d68555fdce84ecf5cacffa9e0b2529b3
[INFO] checking dekellum/olio against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdekellum%2Folio" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dekellum/olio 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/dekellum/olio
[INFO] finished tweaking git repo https://github.com/dekellum/olio
[INFO] tweaked toml for git repo https://github.com/dekellum/olio written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dekellum/olio 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 6dfa8978a8e16cab77a9e2bae677e33499b78e8a1501706136e95bdfbbc66e03
[INFO] running `Command { std: "docker" "start" "-a" "6dfa8978a8e16cab77a9e2bae677e33499b78e8a1501706136e95bdfbbc66e03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dfa8978a8e16cab77a9e2bae677e33499b78e8a1501706136e95bdfbbc66e03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dfa8978a8e16cab77a9e2bae677e33499b78e8a1501706136e95bdfbbc66e03", kill_on_drop: false }`
[INFO] [stdout] 6dfa8978a8e16cab77a9e2bae677e33499b78e8a1501706136e95bdfbbc66e03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 849d56929c7edafce720b71f8199220657972da66dfaf4716c49526eda7bd877
[INFO] running `Command { std: "docker" "start" "-a" "849d56929c7edafce720b71f8199220657972da66dfaf4716c49526eda7bd877", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]    Compiling olio v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.2
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stdout] warning: the item `File` is imported redundantly
[INFO] [stdout]    --> src/fs/read.rs:382:9
[INFO] [stdout]     |
[INFO] [stdout] 382 |     use std::fs::File;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 388 |     use super::*;
[INFO] [stdout]     |         -------- the item `File` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Read` is imported redundantly
[INFO] [stdout]    --> src/fs/read.rs:383:30
[INFO] [stdout]     |
[INFO] [stdout] 383 |     use std::io::{BufReader, Read, Write};
[INFO] [stdout]     |                              ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 388 |     use super::*;
[INFO] [stdout]     |         -------- the item `Read` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.29s
[INFO] running `Command { std: "docker" "inspect" "849d56929c7edafce720b71f8199220657972da66dfaf4716c49526eda7bd877", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "849d56929c7edafce720b71f8199220657972da66dfaf4716c49526eda7bd877", kill_on_drop: false }`
[INFO] [stdout] 849d56929c7edafce720b71f8199220657972da66dfaf4716c49526eda7bd877