[INFO] fetching crate postform_serial 0.4.0...
[INFO] checking postform_serial-0.4.0 against try#e0f03aec47b100bc29555561bd62a99d1bc6aca5 for pr-86231
[INFO] extracting crate postform_serial 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate postform_serial 0.4.0 on toolchain e0f03aec47b100bc29555561bd62a99d1bc6aca5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate postform_serial 0.4.0
[INFO] finished tweaking crates.io crate postform_serial 0.4.0
[INFO] tweaked toml for crates.io crate postform_serial 0.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate postform_serial 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "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 postform_decoder v0.4.0
[INFO] [stderr]   Downloaded rcobs v0.1.1
[INFO] [stderr]   Downloaded serialport v4.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf4f04c26af773b9ac9eb7e5e5aae9f0c1c81b8a1724edb1034a4479ddd40db3
[INFO] running `Command { std: "docker" "start" "-a" "cf4f04c26af773b9ac9eb7e5e5aae9f0c1c81b8a1724edb1034a4479ddd40db3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf4f04c26af773b9ac9eb7e5e5aae9f0c1c81b8a1724edb1034a4479ddd40db3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf4f04c26af773b9ac9eb7e5e5aae9f0c1c81b8a1724edb1034a4479ddd40db3", kill_on_drop: false }`
[INFO] [stdout] cf4f04c26af773b9ac9eb7e5e5aae9f0c1c81b8a1724edb1034a4479ddd40db3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 040f51d3eaa0876e60a760f79f4a2c09f86f27b669399010cc7f52035f4660a7
[INFO] running `Command { std: "docker" "start" "-a" "040f51d3eaa0876e60a760f79f4a2c09f86f27b669399010cc7f52035f4660a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling bindgen v0.57.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling eyre v0.6.5
[INFO] [stderr]     Checking object v0.24.0
[INFO] [stderr]     Checking owo-colors v1.3.0
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking wasmparser v0.57.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking rcobs v0.1.1
[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling libloading v0.7.0
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]     Checking addr2line v0.15.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling clang-sys v1.2.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking tracing-subscriber v0.2.18
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking serialport v4.0.1
[INFO] [stderr]     Checking ctrlc v3.1.9
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking color-spantrace v0.1.6
[INFO] [stderr]     Checking color-eyre v0.5.11
[INFO] [stderr]    Compiling postform_decoder v0.4.0
[INFO] [stderr]     Checking postform_serial v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.51s
[INFO] running `Command { std: "docker" "inspect" "040f51d3eaa0876e60a760f79f4a2c09f86f27b669399010cc7f52035f4660a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "040f51d3eaa0876e60a760f79f4a2c09f86f27b669399010cc7f52035f4660a7", kill_on_drop: false }`
[INFO] [stdout] 040f51d3eaa0876e60a760f79f4a2c09f86f27b669399010cc7f52035f4660a7