[INFO] fetching crate symexpr 0.3.0...
[INFO] testing symexpr-0.3.0 against try#16fbf98f22730e073c09e7b03f0eafb87a295545 for pr-145628
[INFO] extracting crate symexpr 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate symexpr 0.3.0
[INFO] finished tweaking crates.io crate symexpr 0.3.0
[INFO] tweaked toml for crates.io crate symexpr 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate symexpr 0.3.0 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 symexpr 0.3.0 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c9ca354bb629ad86845a5fb216b29ff9d3a316043666966c4adcec582f09c796
[INFO] running `Command { std: "docker" "start" "-a" "c9ca354bb629ad86845a5fb216b29ff9d3a316043666966c4adcec582f09c796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9ca354bb629ad86845a5fb216b29ff9d3a316043666966c4adcec582f09c796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9ca354bb629ad86845a5fb216b29ff9d3a316043666966c4adcec582f09c796", kill_on_drop: false }`
[INFO] [stdout] c9ca354bb629ad86845a5fb216b29ff9d3a316043666966c4adcec582f09c796
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9ddf96b22738402ea87d95f9373283c4f94396c2e6994456583e48e836080a47
[INFO] running `Command { std: "docker" "start" "-a" "9ddf96b22738402ea87d95f9373283c4f94396c2e6994456583e48e836080a47", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling foldhash v0.1.5
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling hashbrown v0.15.4
[INFO] [stderr]    Compiling symbol_table v0.4.0
[INFO] [stderr]    Compiling symexpr v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.11s
[INFO] running `Command { std: "docker" "inspect" "9ddf96b22738402ea87d95f9373283c4f94396c2e6994456583e48e836080a47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ddf96b22738402ea87d95f9373283c4f94396c2e6994456583e48e836080a47", kill_on_drop: false }`
[INFO] [stdout] 9ddf96b22738402ea87d95f9373283c4f94396c2e6994456583e48e836080a47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c83dff19cdd4560885439ebcb516f76fa5ad24e59c9088b4ca9758f7b217fd2f
[INFO] running `Command { std: "docker" "start" "-a" "c83dff19cdd4560885439ebcb516f76fa5ad24e59c9088b4ca9758f7b217fd2f", kill_on_drop: false }`
[INFO] [stderr]    Compiling symexpr v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "c83dff19cdd4560885439ebcb516f76fa5ad24e59c9088b4ca9758f7b217fd2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c83dff19cdd4560885439ebcb516f76fa5ad24e59c9088b4ca9758f7b217fd2f", kill_on_drop: false }`
[INFO] [stdout] c83dff19cdd4560885439ebcb516f76fa5ad24e59c9088b4ca9758f7b217fd2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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", kill_on_drop: false }`
[INFO] [stdout] e3463a21f9215dac8a4c7d25e16a64be96dd9a3509ae286280c4a089ac593eec
[INFO] running `Command { std: "docker" "start" "-a" "e3463a21f9215dac8a4c7d25e16a64be96dd9a3509ae286280c4a089ac593eec", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `hashbrown v0.15.4`
[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 `hashbrown v0.15.4`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/hashbrown-0.15.4`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "e3463a21f9215dac8a4c7d25e16a64be96dd9a3509ae286280c4a089ac593eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3463a21f9215dac8a4c7d25e16a64be96dd9a3509ae286280c4a089ac593eec", kill_on_drop: false }`
[INFO] [stdout] e3463a21f9215dac8a4c7d25e16a64be96dd9a3509ae286280c4a089ac593eec