[INFO] fetching crate mkfs-ext2 0.1.0...
[INFO] testing mkfs-ext2-0.1.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate mkfs-ext2 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate mkfs-ext2 0.1.0
[INFO] finished tweaking crates.io crate mkfs-ext2 0.1.0
[INFO] tweaked toml for crates.io crate mkfs-ext2 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mkfs-ext2 0.1.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d18a60bd3258f80b2757e9f9f26f659503163687b87859729f7e1f166b9bf71
[INFO] running `Command { std: "docker" "start" "-a" "2d18a60bd3258f80b2757e9f9f26f659503163687b87859729f7e1f166b9bf71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d18a60bd3258f80b2757e9f9f26f659503163687b87859729f7e1f166b9bf71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d18a60bd3258f80b2757e9f9f26f659503163687b87859729f7e1f166b9bf71", kill_on_drop: false }`
[INFO] [stdout] 2d18a60bd3258f80b2757e9f9f26f659503163687b87859729f7e1f166b9bf71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fade9dc7382829a942fbaaed0b9fbe07d34a7431af61f350c74bd3dc010a57d
[INFO] running `Command { std: "docker" "start" "-a" "6fade9dc7382829a942fbaaed0b9fbe07d34a7431af61f350c74bd3dc010a57d", kill_on_drop: false }`
[INFO] [stderr]    Compiling mkfs-filesystem v0.1.0
[INFO] [stderr]    Compiling mkfs-ext2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `error_in_core` has been stable since 1.81.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(error_in_core)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ext2InodeAddress` is never constructed
[INFO] [stdout]   --> src/lib.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Ext2InodeAddress(NonZeroU32);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Ext2InodeAddress {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 19 |     pub fn new(n: u32) -> Option<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `block_device` and `superblock` are never read
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Ext2Fs<T> {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 25 |     block_device: T,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 26 |     superblock: Superblock,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "6fade9dc7382829a942fbaaed0b9fbe07d34a7431af61f350c74bd3dc010a57d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fade9dc7382829a942fbaaed0b9fbe07d34a7431af61f350c74bd3dc010a57d", kill_on_drop: false }`
[INFO] [stdout] 6fade9dc7382829a942fbaaed0b9fbe07d34a7431af61f350c74bd3dc010a57d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff3250e59f7fe89c91c033e1c4d98b2f06dd44040f1d8f6e067a2dadf344d2d1
[INFO] running `Command { std: "docker" "start" "-a" "ff3250e59f7fe89c91c033e1c4d98b2f06dd44040f1d8f6e067a2dadf344d2d1", kill_on_drop: false }`
[INFO] [stdout] warning: the feature `error_in_core` has been stable since 1.81.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(error_in_core)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ext2InodeAddress` is never constructed
[INFO] [stdout]   --> src/lib.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Ext2InodeAddress(NonZeroU32);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mkfs-ext2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Ext2InodeAddress {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 19 |     pub fn new(n: u32) -> Option<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `block_device` and `superblock` are never read
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Ext2Fs<T> {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 25 |     block_device: T,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 26 |     superblock: Superblock,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `error_in_core` has been stable since 1.81.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(error_in_core)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ext2InodeAddress` is never constructed
[INFO] [stdout]   --> src/lib.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Ext2InodeAddress(NonZeroU32);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Ext2InodeAddress {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 19 |     pub fn new(n: u32) -> Option<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `block_device` and `superblock` are never read
[INFO] [stdout]   --> src/lib.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Ext2Fs<T> {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 25 |     block_device: T,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 26 |     superblock: Superblock,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "ff3250e59f7fe89c91c033e1c4d98b2f06dd44040f1d8f6e067a2dadf344d2d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff3250e59f7fe89c91c033e1c4d98b2f06dd44040f1d8f6e067a2dadf344d2d1", kill_on_drop: false }`
[INFO] [stdout] ff3250e59f7fe89c91c033e1c4d98b2f06dd44040f1d8f6e067a2dadf344d2d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d0a7ac82a22fa7e1dfb73141bdccfceceb4aa4c48724659e96911855dc068605
[INFO] running `Command { std: "docker" "start" "-a" "d0a7ac82a22fa7e1dfb73141bdccfceceb4aa4c48724659e96911855dc068605", kill_on_drop: false }`
[INFO] [stderr] warning: the feature `error_in_core` has been stable since 1.81.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(error_in_core)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Ext2InodeAddress` is never constructed
[INFO] [stderr]   --> src/lib.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | struct Ext2InodeAddress(NonZeroU32);
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/lib.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl Ext2InodeAddress {
[INFO] [stderr]    | --------------------- associated function in this implementation
[INFO] [stderr] 19 |     pub fn new(n: u32) -> Option<Self> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `block_device` and `superblock` are never read
[INFO] [stderr]   --> src/lib.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub struct Ext2Fs<T> {
[INFO] [stderr]    |            ------ fields in this struct
[INFO] [stderr] 25 |     block_device: T,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 26 |     superblock: Superblock,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `mkfs-ext2` (lib) generated 4 warnings
[INFO] [stderr] warning: `mkfs-ext2` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ext2-55638b8f4a09c0e6)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test superblock::tests::test_read_u16_le ... ok
[INFO] [stdout] test superblock::tests::test_read_u16_le_short ... ok
[INFO] [stdout] test superblock::tests::test_superblock_try_from ... ok
[INFO] [stdout] test superblock::tests::test_read_u32_le_short ... ok
[INFO] [stdout] test superblock::tests::test_read_u32_le ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ext2
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d0a7ac82a22fa7e1dfb73141bdccfceceb4aa4c48724659e96911855dc068605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0a7ac82a22fa7e1dfb73141bdccfceceb4aa4c48724659e96911855dc068605", kill_on_drop: false }`
[INFO] [stdout] d0a7ac82a22fa7e1dfb73141bdccfceceb4aa4c48724659e96911855dc068605