[INFO] fetching crate zirael_core 0.1.0...
[INFO] testing zirael_core-0.1.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate zirael_core 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate zirael_core 0.1.0
[INFO] finished tweaking crates.io crate zirael_core 0.1.0
[INFO] tweaked toml for crates.io crate zirael_core 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zirael_core 0.1.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zirael_core 0.1.0 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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 dashmap v7.0.0-rc2
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b5556e2ab3223f91b847f0c1276ef144f0518903df9395c4925b35e048c5d02
[INFO] running `Command { std: "docker" "start" "-a" "1b5556e2ab3223f91b847f0c1276ef144f0518903df9395c4925b35e048c5d02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b5556e2ab3223f91b847f0c1276ef144f0518903df9395c4925b35e048c5d02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b5556e2ab3223f91b847f0c1276ef144f0518903df9395c4925b35e048c5d02", kill_on_drop: false }`
[INFO] [stdout] 1b5556e2ab3223f91b847f0c1276ef144f0518903df9395c4925b35e048c5d02
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e4e6cb96682279761d415921f503846a8dd3b367fc5c26e69ef8343ad0f1ec5
[INFO] running `Command { std: "docker" "start" "-a" "8e4e6cb96682279761d415921f503846a8dd3b367fc5c26e69ef8343ad0f1ec5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling hashbrown v0.15.4
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling id-arena v2.2.1
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling ariadne v0.5.1
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling dashmap v7.0.0-rc2
[INFO] [stderr]    Compiling zirael_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `parking_lot::RwLock`
[INFO] [stdout]  --> src/context.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use parking_lot::RwLock;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `path::PathBuf` and `sync::Arc`
[INFO] [stdout]  --> src/context.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{path::PathBuf, sync::Arc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::Context`
[INFO] [stdout]  --> src/sources.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::Context;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.04s
[INFO] running `Command { std: "docker" "inspect" "8e4e6cb96682279761d415921f503846a8dd3b367fc5c26e69ef8343ad0f1ec5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e4e6cb96682279761d415921f503846a8dd3b367fc5c26e69ef8343ad0f1ec5", kill_on_drop: false }`
[INFO] [stdout] 8e4e6cb96682279761d415921f503846a8dd3b367fc5c26e69ef8343ad0f1ec5
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62c9d2844bfbce82701442e370a412af105b0cd0957e16f8b0a131e4c99088ec
[INFO] running `Command { std: "docker" "start" "-a" "62c9d2844bfbce82701442e370a412af105b0cd0957e16f8b0a131e4c99088ec", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `cfg-if v1.0.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   unable to get packages from source
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack package `cfg-if v1.0.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cfg-if-1.0.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "62c9d2844bfbce82701442e370a412af105b0cd0957e16f8b0a131e4c99088ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62c9d2844bfbce82701442e370a412af105b0cd0957e16f8b0a131e4c99088ec", kill_on_drop: false }`
[INFO] [stdout] 62c9d2844bfbce82701442e370a412af105b0cd0957e16f8b0a131e4c99088ec