[INFO] fetching crate car-nostd 0.6.0...
[INFO] testing car-nostd-0.6.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate car-nostd 0.6.0 into /workspace/builds/worker-6-tc2/source
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate car-nostd 0.6.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate car-nostd 0.6.0
[INFO] tweaked toml for crates.io crate car-nostd 0.6.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate car-nostd 0.6.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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 106 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.13.0 (available: v0.14.0)
[INFO] [stderr]       Adding test-strategy v0.3.1 (available: v0.4.3)
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f39e3afc6aa019155e9af4d972be7c5cf1a9b17002007a446b58325dd227e21e
[INFO] running `Command { std: "docker" "start" "-a" "f39e3afc6aa019155e9af4d972be7c5cf1a9b17002007a446b58325dd227e21e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f39e3afc6aa019155e9af4d972be7c5cf1a9b17002007a446b58325dd227e21e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f39e3afc6aa019155e9af4d972be7c5cf1a9b17002007a446b58325dd227e21e", kill_on_drop: false }`
[INFO] [stdout] f39e3afc6aa019155e9af4d972be7c5cf1a9b17002007a446b58325dd227e21e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 4bd727c2865e1e89acd39b00de9f8de05b210c3494ddd44495702d01aff338a7
[INFO] running `Command { std: "docker" "start" "-a" "4bd727c2865e1e89acd39b00de9f8de05b210c3494ddd44495702d01aff338a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling data-encoding v2.9.0
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling unsigned-varint v0.8.0
[INFO] [stderr]    Compiling base-x v0.2.11
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling core2 v0.4.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling data-encoding-macro-internal v0.1.16
[INFO] [stderr]    Compiling data-encoding-macro v0.1.18
[INFO] [stderr]    Compiling multibase v0.9.1
[INFO] [stderr]    Compiling serde_bytes v0.11.17
[INFO] [stderr]    Compiling multihash v0.19.3
[INFO] [stderr]    Compiling cbor4ii v0.2.14
[INFO] [stderr]    Compiling cid v0.11.1
[INFO] [stderr]    Compiling ipld-core v0.4.2
[INFO] [stderr]    Compiling serde_ipld_dagcbor v0.6.3
[INFO] [stderr]    Compiling car-nostd v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.01s
[INFO] running `Command { std: "docker" "inspect" "4bd727c2865e1e89acd39b00de9f8de05b210c3494ddd44495702d01aff338a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bd727c2865e1e89acd39b00de9f8de05b210c3494ddd44495702d01aff338a7", kill_on_drop: false }`
[INFO] [stdout] 4bd727c2865e1e89acd39b00de9f8de05b210c3494ddd44495702d01aff338a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7a00c67814249f3e7fd45ce31abfc532e5eb98cbd02cdf9727a406de3051bf9e
[INFO] running `Command { std: "docker" "start" "-a" "7a00c67814249f3e7fd45ce31abfc532e5eb98cbd02cdf9727a406de3051bf9e", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `synstructure v0.13.2`
[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 `synstructure v0.13.2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to create directory `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/synstructure-0.13.2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "7a00c67814249f3e7fd45ce31abfc532e5eb98cbd02cdf9727a406de3051bf9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a00c67814249f3e7fd45ce31abfc532e5eb98cbd02cdf9727a406de3051bf9e", kill_on_drop: false }`
[INFO] [stdout] 7a00c67814249f3e7fd45ce31abfc532e5eb98cbd02cdf9727a406de3051bf9e