[INFO] fetching crate pack-db 0.2.0...
[INFO] testing pack-db-0.2.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate pack-db 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate pack-db 0.2.0
[INFO] finished tweaking crates.io crate pack-db 0.2.0
[INFO] tweaked toml for crates.io crate pack-db 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pack-db 0.2.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pack-db 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rmp v0.8.10
[INFO] [stderr]   Downloaded anyhow v1.0.45
[INFO] [stderr]   Downloaded rmp-serde v1.0.0-beta.2
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f5b9a6408431e0bb7eaabc1931c6bf5987ee040bc7497dadcba3445d2718c79
[INFO] running `Command { std: "docker" "start" "-a" "2f5b9a6408431e0bb7eaabc1931c6bf5987ee040bc7497dadcba3445d2718c79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f5b9a6408431e0bb7eaabc1931c6bf5987ee040bc7497dadcba3445d2718c79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f5b9a6408431e0bb7eaabc1931c6bf5987ee040bc7497dadcba3445d2718c79", kill_on_drop: false }`
[INFO] [stdout] 2f5b9a6408431e0bb7eaabc1931c6bf5987ee040bc7497dadcba3445d2718c79
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 930753108e19da0fee9f8a75abdefc9b4aa586f81c99dcc510d58129fb0af9af
[INFO] running `Command { std: "docker" "start" "-a" "930753108e19da0fee9f8a75abdefc9b4aa586f81c99dcc510d58129fb0af9af", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling anyhow v1.0.45
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling rmp v0.8.10
[INFO] [stderr]    Compiling rmp-serde v1.0.0-beta.2
[INFO] [stderr]    Compiling pack-db v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.94s
[INFO] running `Command { std: "docker" "inspect" "930753108e19da0fee9f8a75abdefc9b4aa586f81c99dcc510d58129fb0af9af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "930753108e19da0fee9f8a75abdefc9b4aa586f81c99dcc510d58129fb0af9af", kill_on_drop: false }`
[INFO] [stdout] 930753108e19da0fee9f8a75abdefc9b4aa586f81c99dcc510d58129fb0af9af
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fa67bd72c3f5eb86b6a7280d97cbb86c765e41d4ec997a15d87bcf5e99c07d0
[INFO] running `Command { std: "docker" "start" "-a" "2fa67bd72c3f5eb86b6a7280d97cbb86c765e41d4ec997a15d87bcf5e99c07d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling pack-db v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `serde_json`
[INFO] [stdout]  --> examples/serde_json.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde_json::{json, Value};
[INFO] [stdout]   |     ^^^^^^^^^^ use of unresolved module or unlinked crate `serde_json`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file examples/serde_json.rs, use `mod serde_json` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 1 + mod serde_json;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> examples/serde_json.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde::{Deserialize, Serialize};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pack-db` (example "serde_json") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2fa67bd72c3f5eb86b6a7280d97cbb86c765e41d4ec997a15d87bcf5e99c07d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fa67bd72c3f5eb86b6a7280d97cbb86c765e41d4ec997a15d87bcf5e99c07d0", kill_on_drop: false }`
[INFO] [stdout] 2fa67bd72c3f5eb86b6a7280d97cbb86c765e41d4ec997a15d87bcf5e99c07d0
