[INFO] fetching crate compacto 1.0.2...
[INFO] checking compacto-1.0.2 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate compacto 1.0.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate compacto 1.0.2
[INFO] finished tweaking crates.io crate compacto 1.0.2
[INFO] tweaked toml for crates.io crate compacto 1.0.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate compacto 1.0.2 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] crate crates.io crate compacto 1.0.2 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 37e08d5aae35f7c1ecb5b9af899102c26cbeede3f188f11c14e62f4788698322
[INFO] running `Command { std: "docker" "start" "-a" "37e08d5aae35f7c1ecb5b9af899102c26cbeede3f188f11c14e62f4788698322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37e08d5aae35f7c1ecb5b9af899102c26cbeede3f188f11c14e62f4788698322", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37e08d5aae35f7c1ecb5b9af899102c26cbeede3f188f11c14e62f4788698322", kill_on_drop: false }`
[INFO] [stdout] 37e08d5aae35f7c1ecb5b9af899102c26cbeede3f188f11c14e62f4788698322
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 360e413f71a5c88f12920d78d7e750be3f61b616099d8e304aa0627b02f9ee54
[INFO] running `Command { std: "docker" "start" "-a" "360e413f71a5c88f12920d78d7e750be3f61b616099d8e304aa0627b02f9ee54", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.6
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking seahash v4.1.0
[INFO] [stderr]     Checking compacto v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: couldn't read `src/../../samples/test-samples/output.json`: No such file or directory (os error 2)
[INFO] [stdout]    --> src/decompress.rs:126:33
[INFO] [stdout]     |
[INFO] [stdout] 126 |     const OUTPUT_SAMPLE: &str = include_str!("../../samples/test-samples/output.json");
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read `src/../../samples/test-samples/input.json`: No such file or directory (os error 2)
[INFO] [stdout]    --> src/decompress.rs:127:32
[INFO] [stdout]     |
[INFO] [stdout] 127 |     const INPUT_SAMPLE: &str = include_str!("../../samples/test-samples/input.json");
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `output` is never read
[INFO] [stdout]   --> src/compress.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct Compressor {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 11 |     output: Value,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Compressor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `output` is never read
[INFO] [stdout]  --> src/decompress.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Decompressor {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9 |     output: Value,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Decompressor` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compacto` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "360e413f71a5c88f12920d78d7e750be3f61b616099d8e304aa0627b02f9ee54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "360e413f71a5c88f12920d78d7e750be3f61b616099d8e304aa0627b02f9ee54", kill_on_drop: false }`
[INFO] [stdout] 360e413f71a5c88f12920d78d7e750be3f61b616099d8e304aa0627b02f9ee54