[INFO] fetching crate stcat 0.2.3...
[INFO] testing stcat-0.2.3 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate stcat 0.2.3 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate stcat 0.2.3
[INFO] finished tweaking crates.io crate stcat 0.2.3
[INFO] tweaked toml for crates.io crate stcat 0.2.3 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stcat 0.2.3 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 100 packages to latest compatible versions
[INFO] [stderr]       Adding clap v2.34.0 (available: v4.6.1)
[INFO] [stderr]       Adding sloggers v0.2.9 (available: v2.2.0)
[INFO] [stderr]       Adding xmas-elf v0.6.2 (available: v0.10.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f3f810cedc76225d49b9970e8128aa2dae65548dc25112da8b3ed88676e00b7
[INFO] running `Command { std: "docker" "start" "-a" "8f3f810cedc76225d49b9970e8128aa2dae65548dc25112da8b3ed88676e00b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f3f810cedc76225d49b9970e8128aa2dae65548dc25112da8b3ed88676e00b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f3f810cedc76225d49b9970e8128aa2dae65548dc25112da8b3ed88676e00b7", kill_on_drop: false }`
[INFO] [stdout] 8f3f810cedc76225d49b9970e8128aa2dae65548dc25112da8b3ed88676e00b7
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9f20b06876674db849e2543a68ed46ea175639884c45e8d87c03fa3c02a2866
[INFO] running `Command { std: "docker" "start" "-a" "e9f20b06876674db849e2543a68ed46ea175639884c45e8d87c03fa3c02a2866", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling time-macros v0.2.27
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling slog v2.8.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling arc-swap v1.9.1
[INFO] [stderr]    Compiling slog-async v2.8.0
[INFO] [stderr]    Compiling is-terminal v0.4.17
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling rle-decode-fast v1.0.3
[INFO] [stderr]    Compiling term v1.2.1
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling libflate v0.1.27
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling zero v0.1.3
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling xmas-elf v0.6.2
[INFO] [stderr]    Compiling erased-serde v0.3.31
[INFO] [stderr]    Compiling time v0.3.47
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling slog-scope v4.4.1
[INFO] [stderr]    Compiling slog-stdlog v3.0.5
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling trackable_derive v1.0.0
[INFO] [stderr]    Compiling trackable v1.3.0
[INFO] [stderr]    Compiling trackable v0.2.24
[INFO] [stderr]    Compiling slog-term v2.9.2
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling slog-kvfilter v0.6.1
[INFO] [stderr]    Compiling backtrace v0.3.76
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling sloggers v0.2.9
[INFO] [stderr]    Compiling stcat v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:117:25
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn no_timestamp(_: &mut Write) -> io::Result<()> {
[INFO] [stdout]     |                         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:1:9
[INFO] [stdout]     |
[INFO] [stdout]   1 | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` implied by `#[warn(warnings)]`
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn no_timestamp(_: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:87:31
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let (input, format): (Box<Read>, _) = if let Some(logfile) = matches.value_of("LOGFILE") {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let (input, format): (Box<dyn Read>, _) = if let Some(logfile) = matches.value_of("LOGFILE") {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.06s
[INFO] running `Command { std: "docker" "inspect" "e9f20b06876674db849e2543a68ed46ea175639884c45e8d87c03fa3c02a2866", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9f20b06876674db849e2543a68ed46ea175639884c45e8d87c03fa3c02a2866", kill_on_drop: false }`
[INFO] [stdout] e9f20b06876674db849e2543a68ed46ea175639884c45e8d87c03fa3c02a2866
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fb193fe5436e638706d9d4504bf0ae529608511ffd3c2eb1ef3796512d5d901
[INFO] running `Command { std: "docker" "start" "-a" "0fb193fe5436e638706d9d4504bf0ae529608511ffd3c2eb1ef3796512d5d901", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling stcat v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:117:25
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn no_timestamp(_: &mut Write) -> io::Result<()> {
[INFO] [stdout]     |                         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:1:9
[INFO] [stdout]     |
[INFO] [stdout]   1 | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` implied by `#[warn(warnings)]`
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn no_timestamp(_: &mut dyn Write) -> io::Result<()> {
[INFO] [stdout]     |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:87:31
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let (input, format): (Box<Read>, _) = if let Some(logfile) = matches.value_of("LOGFILE") {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let (input, format): (Box<dyn Read>, _) = if let Some(logfile) = matches.value_of("LOGFILE") {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "0fb193fe5436e638706d9d4504bf0ae529608511ffd3c2eb1ef3796512d5d901", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fb193fe5436e638706d9d4504bf0ae529608511ffd3c2eb1ef3796512d5d901", kill_on_drop: false }`
[INFO] [stdout] 0fb193fe5436e638706d9d4504bf0ae529608511ffd3c2eb1ef3796512d5d901
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b006afd965e0bfddf12e5634ec1096897001788a7b5dca05e5ac6c7e642671b4
[INFO] running `Command { std: "docker" "start" "-a" "b006afd965e0bfddf12e5634ec1096897001788a7b5dca05e5ac6c7e642671b4", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:117:25
[INFO] [stderr]     |
[INFO] [stderr] 117 | fn no_timestamp(_: &mut Write) -> io::Result<()> {
[INFO] [stderr]     |                         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/main.rs:1:9
[INFO] [stderr]     |
[INFO] [stderr]   1 | #![deny(warnings)]
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` implied by `#[warn(warnings)]`
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 117 | fn no_timestamp(_: &mut dyn Write) -> io::Result<()> {
[INFO] [stderr]     |                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:87:31
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let (input, format): (Box<Read>, _) = if let Some(logfile) = matches.value_of("LOGFILE") {
[INFO] [stderr]    |                               ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let (input, format): (Box<dyn Read>, _) = if let Some(logfile) = matches.value_of("LOGFILE") {
[INFO] [stderr]    |                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: `stcat` (bin "stcat" test) generated 2 warnings (run `cargo fix --bin "stcat" -p stcat --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/stcat-96a37848a862ad87)
[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" "b006afd965e0bfddf12e5634ec1096897001788a7b5dca05e5ac6c7e642671b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b006afd965e0bfddf12e5634ec1096897001788a7b5dca05e5ac6c7e642671b4", kill_on_drop: false }`
[INFO] [stdout] b006afd965e0bfddf12e5634ec1096897001788a7b5dca05e5ac6c7e642671b4
