[INFO] fetching crate scursor 0.5.0...
[INFO] testing scursor-0.5.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate scursor 0.5.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate scursor 0.5.0
[INFO] finished tweaking crates.io crate scursor 0.5.0
[INFO] tweaked toml for crates.io crate scursor 0.5.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate scursor 0.5.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate scursor 0.5.0 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a0fe3c9acfb704dc3543a20cb8a927d53ee4fa6ebeac7b19e20c1c17a30895b3
[INFO] running `Command { std: "docker" "start" "-a" "a0fe3c9acfb704dc3543a20cb8a927d53ee4fa6ebeac7b19e20c1c17a30895b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0fe3c9acfb704dc3543a20cb8a927d53ee4fa6ebeac7b19e20c1c17a30895b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0fe3c9acfb704dc3543a20cb8a927d53ee4fa6ebeac7b19e20c1c17a30895b3", kill_on_drop: false }`
[INFO] [stdout] a0fe3c9acfb704dc3543a20cb8a927d53ee4fa6ebeac7b19e20c1c17a30895b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09e714f5e2f16b0eaea3f58f6d69d2736125c219448363b43aa6844d4d370821
[INFO] running `Command { std: "docker" "start" "-a" "09e714f5e2f16b0eaea3f58f6d69d2736125c219448363b43aa6844d4d370821", kill_on_drop: false }`
[INFO] [stderr]    Compiling scursor v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "09e714f5e2f16b0eaea3f58f6d69d2736125c219448363b43aa6844d4d370821", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09e714f5e2f16b0eaea3f58f6d69d2736125c219448363b43aa6844d4d370821", kill_on_drop: false }`
[INFO] [stdout] 09e714f5e2f16b0eaea3f58f6d69d2736125c219448363b43aa6844d4d370821
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d2a822315e75b27ea9ef781b09c283751c0f0e085c01775b80d26e63d84dcbc
[INFO] running `Command { std: "docker" "start" "-a" "1d2a822315e75b27ea9ef781b09c283751c0f0e085c01775b80d26e63d84dcbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling kani v0.0.1
[INFO] [stderr]    Compiling scursor v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "1d2a822315e75b27ea9ef781b09c283751c0f0e085c01775b80d26e63d84dcbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d2a822315e75b27ea9ef781b09c283751c0f0e085c01775b80d26e63d84dcbc", kill_on_drop: false }`
[INFO] [stdout] 1d2a822315e75b27ea9ef781b09c283751c0f0e085c01775b80d26e63d84dcbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 420e23d630a5a0552ec5bce53a6987a331e2817515cc67f7a1d524ccb1b38e90
[INFO] running `Command { std: "docker" "start" "-a" "420e23d630a5a0552ec5bce53a6987a331e2817515cc67f7a1d524ccb1b38e90", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/scursor-0c14c3a712b63d27)
[INFO] [stdout] 
[INFO] [stdout] running 33 tests
[INFO] [stdout] test read::tests::can_read_array ... ok
[INFO] [stdout] test read::tests::can_read_f64_be ... ok
[INFO] [stdout] test read::tests::can_read_f64_le ... ok
[INFO] [stdout] test read::tests::can_read_f32_be ... ok
[INFO] [stdout] test read::tests::can_read_f64_le_nan ... ok
[INFO] [stdout] test read::tests::can_read_i32_be ... ok
[INFO] [stdout] test read::tests::can_read_u128_be ... ok
[INFO] [stdout] test read::tests::can_read_u32_lb ... ok
[INFO] [stdout] test read::tests::can_read_u16_be ... ok
[INFO] [stdout] test read::tests::can_read_u48_be ... ok
[INFO] [stdout] test read::tests::can_read_u64_be ... ok
[INFO] [stdout] test read::tests::can_read_u48_le ... ok
[INFO] [stdout] test read::tests::can_read_u64_le ... ok
[INFO] [stdout] test write::test::can_write_f32_be ... ok
[INFO] [stdout] test read::tests::can_read_u8 ... ok
[INFO] [stdout] test write::test::can_write_i16_be ... ok
[INFO] [stdout] test write::test::can_write_f64_be ... ok
[INFO] [stdout] test write::test::can_write_i32_be ... ok
[INFO] [stdout] test write::test::can_write_u128_le ... ok
[INFO] [stdout] test write::test::can_write_u16_be ... ok
[INFO] [stdout] test write::test::write_overflow_returns_error ... ok
[INFO] [stdout] test write::test::can_write_u8 ... ok
[INFO] [stdout] test read::tests::can_read_i16_be ... ok
[INFO] [stdout] test read::tests::can_read_u16_le ... ok
[INFO] [stdout] test read::tests::can_read_u128_le ... ok
[INFO] [stdout] test read::tests::can_read_u32_le ... ok
[INFO] [stdout] test write::test::transaction_rolls_back_position_on_failure ... ok
[INFO] [stdout] test write::test::write_at_seeks_back_to_original_position_on_failure ... ok
[INFO] [stdout] test write::test::from_pos_seeks_back_to_original_position_on_success ... ok
[INFO] [stdout] test write::test::can_write_u64_be ... ok
[INFO] [stdout] test write::test::can_write_u128_be ... ok
[INFO] [stdout] test write::test::can_write_u32_be ... ok
[INFO] [stdout] test write::test::can_write_u48_be ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 33 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests scursor
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 15) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 35) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 15) stdout ----
[INFO] [stdout] error: `self` parameter is only allowed in associated functions
[INFO] [stdout]   --> src/lib.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn read_array<const N: usize>(&mut self) -> Result<[u8; N], ReadError> {
[INFO] [stdout]    |                                   ^^^^^^^^^ not semantically valid as function parameter
[INFO] [stdout]    |
[INFO] [stdout]    = note: associated functions are those in `impl` or `trait` definitions
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `ReadError` in this scope
[INFO] [stdout]   --> src/lib.rs:16:65
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn read_array<const N: usize>(&mut self) -> Result<[u8; N], ReadError> {
[INFO] [stdout]    |                                                                 ^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 15 + use scursor::ReadError;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `ReadError` in this scope
[INFO] [stdout]   --> src/lib.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 |         .ok_or(ReadError)?;
[INFO] [stdout]    |                ^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this unit struct
[INFO] [stdout]    |
[INFO] [stdout] 15 + use scursor::ReadError;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `ReadError` in this scope
[INFO] [stdout]   --> src/lib.rs:21:46
[INFO] [stdout]    |
[INFO] [stdout] 21 |     self.pos = self.pos.checked_add(N).ok_or(ReadError)?; // overflow-safe arithmetic
[INFO] [stdout]    |                                              ^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this unit struct
[INFO] [stdout]    |
[INFO] [stdout] 15 + use scursor::ReadError;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 15)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.21s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "420e23d630a5a0552ec5bce53a6987a331e2817515cc67f7a1d524ccb1b38e90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "420e23d630a5a0552ec5bce53a6987a331e2817515cc67f7a1d524ccb1b38e90", kill_on_drop: false }`
[INFO] [stdout] 420e23d630a5a0552ec5bce53a6987a331e2817515cc67f7a1d524ccb1b38e90