[INFO] fetching crate jason 0.2.0...
[INFO] checking jason-0.2.0 against master#e29821ff85a2a3000d226f99f62f89464028d5d6 for pr-111505
[INFO] extracting crate jason 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate jason 0.2.0 on toolchain e29821ff85a2a3000d226f99f62f89464028d5d6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e29821ff85a2a3000d226f99f62f89464028d5d6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jason 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate jason 0.2.0
[INFO] tweaked toml for crates.io crate jason 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate jason 0.2.0 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" "+e29821ff85a2a3000d226f99f62f89464028d5d6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-stream-impl v0.3.0
[INFO] [stderr]   Downloaded bytes v1.0.0
[INFO] [stderr]   Downloaded http-body v0.4.0
[INFO] [stderr]   Downloaded tokio-macros v1.0.0
[INFO] [stderr]   Downloaded anyhow v1.0.37
[INFO] [stderr]   Downloaded async-stream v0.3.0
[INFO] [stderr]   Downloaded serde v1.0.118
[INFO] [stderr]   Downloaded mio v0.7.6
[INFO] [stderr]   Downloaded serde_derive v1.0.118
[INFO] [stderr]   Downloaded http v0.2.2
[INFO] [stderr]   Downloaded hyper v0.14.2
[INFO] [stderr]   Downloaded syn v1.0.55
[INFO] [stderr]   Downloaded tokio v1.0.1
[INFO] [stderr]   Downloaded libc v0.2.81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e29821ff85a2a3000d226f99f62f89464028d5d6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93e43c61d5fec0ace6ccbbfc2b8bbf1223bb857a90eaad25039ccae9651a6576
[INFO] running `Command { std: "docker" "start" "-a" "93e43c61d5fec0ace6ccbbfc2b8bbf1223bb857a90eaad25039ccae9651a6576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93e43c61d5fec0ace6ccbbfc2b8bbf1223bb857a90eaad25039ccae9651a6576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93e43c61d5fec0ace6ccbbfc2b8bbf1223bb857a90eaad25039ccae9651a6576", kill_on_drop: false }`
[INFO] [stdout] 93e43c61d5fec0ace6ccbbfc2b8bbf1223bb857a90eaad25039ccae9651a6576
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e29821ff85a2a3000d226f99f62f89464028d5d6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b02f9780765b1cff5e7e49b13a07f672ebc988273bcf39afe4cbc83774cc0098
[INFO] running `Command { std: "docker" "start" "-a" "b02f9780765b1cff5e7e49b13a07f672ebc988273bcf39afe4cbc83774cc0098", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking futures-sink v0.3.8
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking futures-core v0.3.8
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]    Compiling tokio v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling anyhow v1.0.37
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking bytes v1.0.0
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking http v0.2.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking mio v0.7.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking http-body v0.4.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking hyper v0.14.2
[INFO] [stderr]     Checking jason v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.28s
[INFO] running `Command { std: "docker" "inspect" "b02f9780765b1cff5e7e49b13a07f672ebc988273bcf39afe4cbc83774cc0098", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b02f9780765b1cff5e7e49b13a07f672ebc988273bcf39afe4cbc83774cc0098", kill_on_drop: false }`
[INFO] [stdout] b02f9780765b1cff5e7e49b13a07f672ebc988273bcf39afe4cbc83774cc0098