[INFO] fetching crate confined_encoding_derive 0.9.0-alpha.2...
[INFO] testing confined_encoding_derive-0.9.0-alpha.2 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate confined_encoding_derive 0.9.0-alpha.2 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate confined_encoding_derive 0.9.0-alpha.2
[INFO] finished tweaking crates.io crate confined_encoding_derive 0.9.0-alpha.2
[INFO] tweaked toml for crates.io crate confined_encoding_derive 0.9.0-alpha.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate confined_encoding_derive 0.9.0-alpha.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 78 packages to latest compatible versions
[INFO] [stderr]       Adding amplify_syn v1.1.6 (available: v2.0.1)
[INFO] [stderr]       Adding compiletest_rs v0.9.0 (available: v0.11.2)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded amplify v4.9.0
[INFO] [stderr]   Downloaded tester v0.9.1
[INFO] [stderr]   Downloaded amplify_derive v2.11.3
[INFO] [stderr]   Downloaded encoding_derive_helpers v2.0.0-alpha.2
[INFO] [stderr]   Downloaded amplify_syn v1.1.6
[INFO] [stderr]   Downloaded amplify_syn v2.0.1
[INFO] [stderr]   Downloaded amplify_derive v4.0.1
[INFO] [stderr]   Downloaded compiletest_rs v0.9.0
[INFO] [stderr]   Downloaded amplify_num v0.4.1
[INFO] [stderr]   Downloaded amplify_num v0.5.3
[INFO] [stderr]   Downloaded amplify v3.14.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2e443699acb68d23c9c625a36238d9f0ce70e13cbb302ccb6b90cc7f433c69a9
[INFO] running `Command { std: "docker" "start" "-a" "2e443699acb68d23c9c625a36238d9f0ce70e13cbb302ccb6b90cc7f433c69a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e443699acb68d23c9c625a36238d9f0ce70e13cbb302ccb6b90cc7f433c69a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e443699acb68d23c9c625a36238d9f0ce70e13cbb302ccb6b90cc7f433c69a9", kill_on_drop: false }`
[INFO] [stdout] 2e443699acb68d23c9c625a36238d9f0ce70e13cbb302ccb6b90cc7f433c69a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 5e81e21556bfca359cc2234b88626d072b1c04be534c83824e344cf73bbaa718
[INFO] running `Command { std: "docker" "start" "-a" "5e81e21556bfca359cc2234b88626d072b1c04be534c83824e344cf73bbaa718", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling amplify_num v0.4.1
[INFO] [stderr]    Compiling amplify_syn v1.1.6
[INFO] [stderr]    Compiling amplify_derive v2.11.3
[INFO] [stderr]    Compiling amplify v3.14.2
[INFO] [stderr]    Compiling encoding_derive_helpers v2.0.0-alpha.2
[INFO] [stderr]    Compiling confined_encoding_derive v0.9.0-alpha.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.74s
[INFO] running `Command { std: "docker" "inspect" "5e81e21556bfca359cc2234b88626d072b1c04be534c83824e344cf73bbaa718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e81e21556bfca359cc2234b88626d072b1c04be534c83824e344cf73bbaa718", kill_on_drop: false }`
[INFO] [stdout] 5e81e21556bfca359cc2234b88626d072b1c04be534c83824e344cf73bbaa718
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 396b5cb2b085eb6fd4c19525a0e790414434ed11830d58d9cb00e0351736b7fb
[INFO] running `Command { std: "docker" "start" "-a" "396b5cb2b085eb6fd4c19525a0e790414434ed11830d58d9cb00e0351736b7fb", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `serde_json v1.0.143`
[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 `serde_json v1.0.143`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.143`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "396b5cb2b085eb6fd4c19525a0e790414434ed11830d58d9cb00e0351736b7fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "396b5cb2b085eb6fd4c19525a0e790414434ed11830d58d9cb00e0351736b7fb", kill_on_drop: false }`
[INFO] [stdout] 396b5cb2b085eb6fd4c19525a0e790414434ed11830d58d9cb00e0351736b7fb