[INFO] fetching crate procem 0.1.0...
[INFO] testing procem-0.1.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate procem 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate procem 0.1.0
[INFO] finished tweaking crates.io crate procem 0.1.0
[INFO] tweaked toml for crates.io crate procem 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate procem 0.1.0 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 procem 0.1.0 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 877d0156539a7681481fb5ae6ea87a07a77e733ab3170f483ff4346579749de1
[INFO] running `Command { std: "docker" "start" "-a" "877d0156539a7681481fb5ae6ea87a07a77e733ab3170f483ff4346579749de1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "877d0156539a7681481fb5ae6ea87a07a77e733ab3170f483ff4346579749de1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "877d0156539a7681481fb5ae6ea87a07a77e733ab3170f483ff4346579749de1", kill_on_drop: false }`
[INFO] [stdout] 877d0156539a7681481fb5ae6ea87a07a77e733ab3170f483ff4346579749de1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 382a3152f59f2e66731830a8551a5eb951ac31dc19fdcd84043d02c0811eeb2a
[INFO] running `Command { std: "docker" "start" "-a" "382a3152f59f2e66731830a8551a5eb951ac31dc19fdcd84043d02c0811eeb2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling procem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.02s
[INFO] running `Command { std: "docker" "inspect" "382a3152f59f2e66731830a8551a5eb951ac31dc19fdcd84043d02c0811eeb2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "382a3152f59f2e66731830a8551a5eb951ac31dc19fdcd84043d02c0811eeb2a", kill_on_drop: false }`
[INFO] [stdout] 382a3152f59f2e66731830a8551a5eb951ac31dc19fdcd84043d02c0811eeb2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 633b48e59255d7091669041d423cce068cba965b5e5ac61b40f341423129975a
[INFO] running `Command { std: "docker" "start" "-a" "633b48e59255d7091669041d423cce068cba965b5e5ac61b40f341423129975a", kill_on_drop: false }`
[INFO] [stderr]    Compiling procem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find module or crate `alloc` in this scope
[INFO] [stdout]   --> src/helper.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     use alloc::string::ToString;
[INFO] [stdout]    |         ^^^^^ use of unresolved module or unlinked crate `alloc`
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `extern crate alloc` to use the `alloc` crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `alloc`
[INFO] [stdout]   --> src/helper.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     use alloc::format;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: a similar path exists
[INFO] [stdout]    |
[INFO] [stdout] 46 |     use core::alloc::format;
[INFO] [stdout]    |         ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `to_string` found for struct `helper::FmtArray<'_, {integer}>` in the current scope
[INFO] [stdout]   --> src/helper.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct FmtArray<'a, T>(pub &'a [T]);
[INFO] [stdout]    | -------------------------- method `to_string` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 53 |         assert_eq!(formatted.to_string(), "[1, 2, 3]");
[INFO] [stdout]    |                              ^^^^^^^^^ method not found in `helper::FmtArray<'_, {integer}>`
[INFO] [stdout]    |
[INFO] [stdout]   --> /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/alloc/src/string.rs:2880:7
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method is available for `helper::FmtArray<'_, {integer}>` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `ToString` which provides `to_string` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 45 +     use alloc::string::ToString;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `procem` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "633b48e59255d7091669041d423cce068cba965b5e5ac61b40f341423129975a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "633b48e59255d7091669041d423cce068cba965b5e5ac61b40f341423129975a", kill_on_drop: false }`
[INFO] [stdout] 633b48e59255d7091669041d423cce068cba965b5e5ac61b40f341423129975a