[INFO] fetching crate compacto 1.0.2...
[INFO] testing compacto-1.0.2 against 1.90.0 for beta-1.91-3
[INFO] extracting crate compacto 1.0.2 into /workspace/builds/worker-0-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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate compacto 1.0.2 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ryu v1.0.6
[INFO] [stderr]   Downloaded serde_json v1.0.72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 718357b869f5b84a938d743050b9fc4365e6791b7a2c76e814b1b17efb24714c
[INFO] running `Command { std: "docker" "start" "-a" "718357b869f5b84a938d743050b9fc4365e6791b7a2c76e814b1b17efb24714c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "718357b869f5b84a938d743050b9fc4365e6791b7a2c76e814b1b17efb24714c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "718357b869f5b84a938d743050b9fc4365e6791b7a2c76e814b1b17efb24714c", kill_on_drop: false }`
[INFO] [stdout] 718357b869f5b84a938d743050b9fc4365e6791b7a2c76e814b1b17efb24714c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf577f506693a8c31bbb51e0bc19d2405d0bc2c1873325c470c87a23e36dfe18
[INFO] running `Command { std: "docker" "start" "-a" "bf577f506693a8c31bbb51e0bc19d2405d0bc2c1873325c470c87a23e36dfe18", 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]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling compacto v1.0.2 (/opt/rustwide/workdir)
[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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.32s
[INFO] running `Command { std: "docker" "inspect" "bf577f506693a8c31bbb51e0bc19d2405d0bc2c1873325c470c87a23e36dfe18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf577f506693a8c31bbb51e0bc19d2405d0bc2c1873325c470c87a23e36dfe18", kill_on_drop: false }`
[INFO] [stdout] bf577f506693a8c31bbb51e0bc19d2405d0bc2c1873325c470c87a23e36dfe18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db98399659d59d135d354ba2029db58e2256b9d11ec9364538256372dfc16324
[INFO] running `Command { std: "docker" "start" "-a" "db98399659d59d135d354ba2029db58e2256b9d11ec9364538256372dfc16324", kill_on_drop: false }`
[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]    Compiling 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] [stderr] error: could not compile `compacto` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "db98399659d59d135d354ba2029db58e2256b9d11ec9364538256372dfc16324", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db98399659d59d135d354ba2029db58e2256b9d11ec9364538256372dfc16324", kill_on_drop: false }`
[INFO] [stdout] db98399659d59d135d354ba2029db58e2256b9d11ec9364538256372dfc16324