[INFO] fetching crate ser-write-json 0.4.0...
[INFO] checking ser-write-json-0.4.0 against master#08cd08fbef8c6663b052d8d9e4930d5696cbb8a7 for 150662-leaf-spurious
[INFO] extracting crate ser-write-json 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate ser-write-json 0.4.0
[INFO] finished tweaking crates.io crate ser-write-json 0.4.0
[INFO] tweaked toml for crates.io crate ser-write-json 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ser-write-json 0.4.0 on toolchain 08cd08fbef8c6663b052d8d9e4930d5696cbb8a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ser-write-json 0.4.0 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" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "fetch" "--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]  Downloading crates ...
[INFO] [stderr]   Downloaded ser-write v0.4.0
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a0e1a36cd74bd65f3ac00983452c77b85f7c2cbec3bda23faf9c81e3d62aabe
[INFO] running `Command { std: "docker" "start" "-a" "8a0e1a36cd74bd65f3ac00983452c77b85f7c2cbec3bda23faf9c81e3d62aabe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a0e1a36cd74bd65f3ac00983452c77b85f7c2cbec3bda23faf9c81e3d62aabe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a0e1a36cd74bd65f3ac00983452c77b85f7c2cbec3bda23faf9c81e3d62aabe", kill_on_drop: false }`
[INFO] [stdout] 8a0e1a36cd74bd65f3ac00983452c77b85f7c2cbec3bda23faf9c81e3d62aabe
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 572286741b2818ae80cd40a30e3edf374a30c96f0e4efd74a0bbce6001389917
[INFO] running `Command { std: "docker" "start" "-a" "572286741b2818ae80cd40a30e3edf374a30c96f0e4efd74a0bbce6001389917", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]     Checking ryu-js v1.0.2
[INFO] [stderr]     Checking ser-write v0.4.0
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]     Checking serde_bytes v0.11.19
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking ser-write-json v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.64s
[INFO] running `Command { std: "docker" "inspect" "572286741b2818ae80cd40a30e3edf374a30c96f0e4efd74a0bbce6001389917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "572286741b2818ae80cd40a30e3edf374a30c96f0e4efd74a0bbce6001389917", kill_on_drop: false }`
[INFO] [stdout] 572286741b2818ae80cd40a30e3edf374a30c96f0e4efd74a0bbce6001389917