[INFO] fetching crate silverfish 0.3.0...
[INFO] testing silverfish-0.3.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate silverfish 0.3.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate silverfish 0.3.0
[INFO] finished tweaking crates.io crate silverfish 0.3.0
[INFO] tweaked toml for crates.io crate silverfish 0.3.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate silverfish 0.3.0 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 silverfish 0.3.0 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]     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]  Downloading crates ...
[INFO] [stderr]   Downloaded simdnbt-derive v0.8.0
[INFO] [stderr]   Downloaded lz4_flex v0.11.5
[INFO] [stderr]   Downloaded lz4-java-wrc v0.2.0
[INFO] [stderr]   Downloaded half v1.8.3
[INFO] [stderr]   Downloaded criterion-plot v0.4.5
[INFO] [stderr]   Downloaded csv-core v0.1.12
[INFO] [stderr]   Downloaded serde_cbor v0.11.2
[INFO] [stderr]   Downloaded criterion v0.3.6
[INFO] [stderr]   Downloaded simdnbt v0.8.0
[INFO] [stderr]   Downloaded simd_cesu8 v1.1.0
[INFO] [stderr]   Downloaded csv v1.3.1
[INFO] [stderr]   Downloaded mca v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 79033c25e93a3291f94224035bad8d886681cfcd4fae5598a641d05e9eeeca79
[INFO] running `Command { std: "docker" "start" "-a" "79033c25e93a3291f94224035bad8d886681cfcd4fae5598a641d05e9eeeca79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79033c25e93a3291f94224035bad8d886681cfcd4fae5598a641d05e9eeeca79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79033c25e93a3291f94224035bad8d886681cfcd4fae5598a641d05e9eeeca79", kill_on_drop: false }`
[INFO] [stdout] 79033c25e93a3291f94224035bad8d886681cfcd4fae5598a641d05e9eeeca79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 8ac8d4fdb8ec905dc1d57c959dc86677f74342af4152672d4f006d481e814ba7
[INFO] running `Command { std: "docker" "start" "-a" "8ac8d4fdb8ec905dc1d57c959dc86677f74342af4152672d4f006d481e814ba7", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling twox-hash v1.6.3
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling lz4_flex v0.11.5
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling simdutf8 v0.1.5
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling simd_cesu8 v1.1.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling flate2 v1.1.2
[INFO] [stderr]    Compiling lz4-java-wrc v0.2.0
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling fixedbitset v0.5.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling thiserror-impl v2.0.16
[INFO] [stderr]    Compiling simdnbt-derive v0.8.0
[INFO] [stderr]    Compiling dashmap v6.1.0
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling mca v1.1.0
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling simdnbt v0.8.0
[INFO] [stderr]    Compiling silverfish v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `len` is never read
[INFO] [stdout]    --> src/region.rs:476:13
[INFO] [stdout]     |
[INFO] [stdout] 476 |             len -= 1;
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.19s
[INFO] running `Command { std: "docker" "inspect" "8ac8d4fdb8ec905dc1d57c959dc86677f74342af4152672d4f006d481e814ba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ac8d4fdb8ec905dc1d57c959dc86677f74342af4152672d4f006d481e814ba7", kill_on_drop: false }`
[INFO] [stdout] 8ac8d4fdb8ec905dc1d57c959dc86677f74342af4152672d4f006d481e814ba7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e54b4ca619a5c1d05d2b57b82198b2b8a4ca9898da97679f94f27178627edd4a
[INFO] running `Command { std: "docker" "start" "-a" "e54b4ca619a5c1d05d2b57b82198b2b8a4ca9898da97679f94f27178627edd4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling serde_json v1.0.141
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling half v1.8.3
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling csv-core v0.1.12
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling csv v1.3.1
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling criterion-plot v0.4.5
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling dashmap v6.1.0
[INFO] [stderr]    Compiling criterion v0.3.6
[INFO] [stderr]    Compiling silverfish v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `len` is never read
[INFO] [stdout]    --> src/region.rs:476:13
[INFO] [stdout]     |
[INFO] [stdout] 476 |             len -= 1;
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read `src/../tests/full_region.mca`: No such file or directory (os error 2)
[INFO] [stdout]    --> src/region.rs:600:32
[INFO] [stdout]     |
[INFO] [stdout] 600 |     const TEST_REGION: &[u8] = include_bytes!("../tests/full_region.mca");
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read `src/../tests/empty_region.mca`: No such file or directory (os error 2)
[INFO] [stdout]    --> src/region.rs:610:33
[INFO] [stdout]     |
[INFO] [stdout] 610 |     const EMPTY_REGION: &[u8] = include_bytes!("../tests/empty_region.mca");
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `len` is never read
[INFO] [stdout]    --> src/region.rs:476:13
[INFO] [stdout]     |
[INFO] [stdout] 476 |             len -= 1;
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `silverfish` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "e54b4ca619a5c1d05d2b57b82198b2b8a4ca9898da97679f94f27178627edd4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e54b4ca619a5c1d05d2b57b82198b2b8a4ca9898da97679f94f27178627edd4a", kill_on_drop: false }`
[INFO] [stdout] e54b4ca619a5c1d05d2b57b82198b2b8a4ca9898da97679f94f27178627edd4a