[INFO] fetching crate flowcode-core 0.4.3-alpha...
[INFO] testing flowcode-core-0.4.3-alpha against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate flowcode-core 0.4.3-alpha into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate flowcode-core 0.4.3-alpha
[INFO] finished tweaking crates.io crate flowcode-core 0.4.3-alpha
[INFO] tweaked toml for crates.io crate flowcode-core 0.4.3-alpha written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flowcode-core 0.4.3-alpha on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate flowcode-core 0.4.3-alpha 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" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e196779dbb394e997f177660eb182c50bec6fe1e94b3c840ff75a06d2c41554
[INFO] running `Command { std: "docker" "start" "-a" "4e196779dbb394e997f177660eb182c50bec6fe1e94b3c840ff75a06d2c41554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e196779dbb394e997f177660eb182c50bec6fe1e94b3c840ff75a06d2c41554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e196779dbb394e997f177660eb182c50bec6fe1e94b3c840ff75a06d2c41554", kill_on_drop: false }`
[INFO] [stdout] 4e196779dbb394e997f177660eb182c50bec6fe1e94b3c840ff75a06d2c41554
[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" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c276758c17c16908a538d3522b37becb4b3ef66b700e125d548e402dd68ca3cc
[INFO] running `Command { std: "docker" "start" "-a" "c276758c17c16908a538d3522b37becb4b3ef66b700e125d548e402dd68ca3cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling half v2.2.1
[INFO] [stderr]    Compiling flowcode-core v0.4.3-alpha (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut commands = KNOWN_COMMANDS.to_vec();
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |         let mut valid_commands = KNOWN_COMMANDS.to_vec();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let mut commands = KNOWN_COMMANDS.to_vec();
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "c276758c17c16908a538d3522b37becb4b3ef66b700e125d548e402dd68ca3cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c276758c17c16908a538d3522b37becb4b3ef66b700e125d548e402dd68ca3cc", kill_on_drop: false }`
[INFO] [stdout] c276758c17c16908a538d3522b37becb4b3ef66b700e125d548e402dd68ca3cc
[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" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da47d5888ae9a672f7e6cde111a84a5b19b92ce550c21d92b71a62c343cc56cc
[INFO] running `Command { std: "docker" "start" "-a" "da47d5888ae9a672f7e6cde111a84a5b19b92ce550c21d92b71a62c343cc56cc", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `rustix v1.0.7`
[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 `rustix v1.0.7`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rustix-1.0.7`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "da47d5888ae9a672f7e6cde111a84a5b19b92ce550c21d92b71a62c343cc56cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da47d5888ae9a672f7e6cde111a84a5b19b92ce550c21d92b71a62c343cc56cc", kill_on_drop: false }`
[INFO] [stdout] da47d5888ae9a672f7e6cde111a84a5b19b92ce550c21d92b71a62c343cc56cc