[INFO] fetching crate serde_piecewise_default 0.2.0...
[INFO] checking serde_piecewise_default-0.2.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate serde_piecewise_default 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate serde_piecewise_default 0.2.0
[INFO] finished tweaking crates.io crate serde_piecewise_default 0.2.0
[INFO] tweaked toml for crates.io crate serde_piecewise_default 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_piecewise_default 0.2.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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 67 packages to latest compatible versions
[INFO] [stderr]       Adding compiletest_rs v0.3.26 (available: v0.11.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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 rustfix v0.4.6
[INFO] [stderr]   Downloaded tester v0.6.0
[INFO] [stderr]   Downloaded serde_piecewise_default_derive v0.2.0
[INFO] [stderr]   Downloaded compiletest_rs v0.3.26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eedb38e8007a9e6ac6a262ffd9f71832cbaf852ac4032106a5145203d25e5fce
[INFO] running `Command { std: "docker" "start" "-a" "eedb38e8007a9e6ac6a262ffd9f71832cbaf852ac4032106a5145203d25e5fce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eedb38e8007a9e6ac6a262ffd9f71832cbaf852ac4032106a5145203d25e5fce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eedb38e8007a9e6ac6a262ffd9f71832cbaf852ac4032106a5145203d25e5fce", kill_on_drop: false }`
[INFO] [stdout] eedb38e8007a9e6ac6a262ffd9f71832cbaf852ac4032106a5145203d25e5fce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdcdab9e21b94494ac9cec8c863417729af0eacd39f6188473f0fb8c608bd7f0
[INFO] running `Command { std: "docker" "start" "-a" "bdcdab9e21b94494ac9cec8c863417729af0eacd39f6188473f0fb8c608bd7f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking backtrace v0.3.75
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking unicode-width v0.2.1
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling compiletest_rs v0.3.26
[INFO] [stderr]     Checking getopts v0.2.23
[INFO] [stderr]     Checking filetime v0.2.25
[INFO] [stderr]     Checking tester v0.6.0
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking rustfix v0.4.6
[INFO] [stderr]    Compiling serde_piecewise_default_derive v0.2.0
[INFO] [stderr]     Checking serde_piecewise_default v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.87s
[INFO] running `Command { std: "docker" "inspect" "bdcdab9e21b94494ac9cec8c863417729af0eacd39f6188473f0fb8c608bd7f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdcdab9e21b94494ac9cec8c863417729af0eacd39f6188473f0fb8c608bd7f0", kill_on_drop: false }`
[INFO] [stdout] bdcdab9e21b94494ac9cec8c863417729af0eacd39f6188473f0fb8c608bd7f0