[INFO] fetching crate ripjson 0.9.8...
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] crate ripjson 0.9.8 is already in cache
[INFO] checking ripjson-0.9.8 against master#7308c22c6a8d77e82187e290e1f7459870e48d12 for pr-99447
[INFO] extracting crate ripjson 0.9.8 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate ripjson 0.9.8 on toolchain 7308c22c6a8d77e82187e290e1f7459870e48d12
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ripjson 0.9.8
[INFO] finished tweaking crates.io crate ripjson 0.9.8
[INFO] tweaked toml for crates.io crate ripjson 0.9.8 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate ripjson 0.9.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indextree v3.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36f2a6eb6daa6baa316797d281ba31cc7916a8cfd8a0b7c726619d2f88ea549c
[INFO] running `Command { std: "docker" "start" "-a" "36f2a6eb6daa6baa316797d281ba31cc7916a8cfd8a0b7c726619d2f88ea549c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36f2a6eb6daa6baa316797d281ba31cc7916a8cfd8a0b7c726619d2f88ea549c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36f2a6eb6daa6baa316797d281ba31cc7916a8cfd8a0b7c726619d2f88ea549c", kill_on_drop: false }`
[INFO] [stdout] 36f2a6eb6daa6baa316797d281ba31cc7916a8cfd8a0b7c726619d2f88ea549c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd99d77cd4b0696ef7b9b5946107581c66f793ac856bcf67c3726e1f406a5ebe
[INFO] running `Command { std: "docker" "start" "-a" "cd99d77cd4b0696ef7b9b5946107581c66f793ac856bcf67c3726e1f406a5ebe", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking environment v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking indextree v3.3.0
[INFO] [stderr]     Checking assert_cli v0.6.3
[INFO] [stderr]     Checking ripjson v0.9.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.91s
[INFO] running `Command { std: "docker" "inspect" "cd99d77cd4b0696ef7b9b5946107581c66f793ac856bcf67c3726e1f406a5ebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd99d77cd4b0696ef7b9b5946107581c66f793ac856bcf67c3726e1f406a5ebe", kill_on_drop: false }`
[INFO] [stdout] cd99d77cd4b0696ef7b9b5946107581c66f793ac856bcf67c3726e1f406a5ebe