[INFO] fetching crate black-box 0.2.0...
[INFO] testing black-box-0.2.0 against try#16fbf98f22730e073c09e7b03f0eafb87a295545 for pr-145628
[INFO] extracting crate black-box 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate black-box 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate black-box 0.2.0
[INFO] tweaked toml for crates.io crate black-box 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate black-box 0.2.0 on toolchain 16fbf98f22730e073c09e7b03f0eafb87a295545
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate black-box 0.2.0 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" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e0f4c525401f7a680c5723e53d1f5be314a8555cc8f3d36ac6d4af6fc7b4dad
[INFO] running `Command { std: "docker" "start" "-a" "8e0f4c525401f7a680c5723e53d1f5be314a8555cc8f3d36ac6d4af6fc7b4dad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e0f4c525401f7a680c5723e53d1f5be314a8555cc8f3d36ac6d4af6fc7b4dad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e0f4c525401f7a680c5723e53d1f5be314a8555cc8f3d36ac6d4af6fc7b4dad", kill_on_drop: false }`
[INFO] [stdout] 8e0f4c525401f7a680c5723e53d1f5be314a8555cc8f3d36ac6d4af6fc7b4dad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc7afd958396a12348dc9ab07bab9aaf18ea1e562899990937d4d1f1410be09c
[INFO] running `Command { std: "docker" "start" "-a" "dc7afd958396a12348dc9ab07bab9aaf18ea1e562899990937d4d1f1410be09c", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling parking v2.2.1
[INFO] [stderr]    Compiling pin-project-lite v0.2.14
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling fastrand v2.1.1
[INFO] [stderr]    Compiling futures-lite v2.3.0
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling event-listener v5.3.1
[INFO] [stderr]    Compiling event-listener-strategy v0.5.2
[INFO] [stderr]    Compiling async-channel v2.3.1
[INFO] [stderr]    Compiling black-box v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `Command { std: "docker" "inspect" "dc7afd958396a12348dc9ab07bab9aaf18ea1e562899990937d4d1f1410be09c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc7afd958396a12348dc9ab07bab9aaf18ea1e562899990937d4d1f1410be09c", kill_on_drop: false }`
[INFO] [stdout] dc7afd958396a12348dc9ab07bab9aaf18ea1e562899990937d4d1f1410be09c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18b1d4961eea8271928fe65e8816d5e57024be0cc5364e1adddb4fe9809dc5e2
[INFO] running `Command { std: "docker" "start" "-a" "18b1d4961eea8271928fe65e8816d5e57024be0cc5364e1adddb4fe9809dc5e2", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `async-executor v1.13.1`
[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 `async-executor v1.13.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/async-executor-1.13.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "18b1d4961eea8271928fe65e8816d5e57024be0cc5364e1adddb4fe9809dc5e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18b1d4961eea8271928fe65e8816d5e57024be0cc5364e1adddb4fe9809dc5e2", kill_on_drop: false }`
[INFO] [stdout] 18b1d4961eea8271928fe65e8816d5e57024be0cc5364e1adddb4fe9809dc5e2