[INFO] fetching crate mavec 0.2.1...
[INFO] testing mavec-0.2.1 against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] extracting crate mavec 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate mavec 0.2.1
[INFO] finished tweaking crates.io crate mavec 0.2.1
[INFO] tweaked toml for crates.io crate mavec 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mavec 0.2.1 on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mavec 0.2.1 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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v2.0.95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b4b3458b6ab24f108c9948c7d62f7f9b9200ad8d4ae6f54af9c7840b87ff1ed
[INFO] running `Command { std: "docker" "start" "-a" "2b4b3458b6ab24f108c9948c7d62f7f9b9200ad8d4ae6f54af9c7840b87ff1ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b4b3458b6ab24f108c9948c7d62f7f9b9200ad8d4ae6f54af9c7840b87ff1ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b4b3458b6ab24f108c9948c7d62f7f9b9200ad8d4ae6f54af9c7840b87ff1ed", kill_on_drop: false }`
[INFO] [stdout] 2b4b3458b6ab24f108c9948c7d62f7f9b9200ad8d4ae6f54af9c7840b87ff1ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fa2d01697359fb00f293032bbd24050d48bcfc2882b06c8598cc6a7b7fc6bf9
[INFO] running `Command { std: "docker" "start" "-a" "4fa2d01697359fb00f293032bbd24050d48bcfc2882b06c8598cc6a7b7fc6bf9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling thiserror v2.0.9
[INFO] [stderr]    Compiling serde_json v1.0.134
[INFO] [stderr]    Compiling itoa v1.0.14
[INFO] [stderr]    Compiling ryu v1.0.18
[INFO] [stderr]    Compiling indexmap v2.7.0
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.95
[INFO] [stderr]    Compiling thiserror-impl v2.0.9
[INFO] [stderr]    Compiling mavec v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.95s
[INFO] running `Command { std: "docker" "inspect" "4fa2d01697359fb00f293032bbd24050d48bcfc2882b06c8598cc6a7b7fc6bf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fa2d01697359fb00f293032bbd24050d48bcfc2882b06c8598cc6a7b7fc6bf9", kill_on_drop: false }`
[INFO] [stdout] 4fa2d01697359fb00f293032bbd24050d48bcfc2882b06c8598cc6a7b7fc6bf9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d81c62daabacf1764bc0d60c18ae4bad9bd7912803c6141551f4371ffc8190cb
[INFO] running `Command { std: "docker" "start" "-a" "d81c62daabacf1764bc0d60c18ae4bad9bd7912803c6141551f4371ffc8190cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling mavec v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "d81c62daabacf1764bc0d60c18ae4bad9bd7912803c6141551f4371ffc8190cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d81c62daabacf1764bc0d60c18ae4bad9bd7912803c6141551f4371ffc8190cb", kill_on_drop: false }`
[INFO] [stdout] d81c62daabacf1764bc0d60c18ae4bad9bd7912803c6141551f4371ffc8190cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 230c62a0c5983131ebfb84df0320fb439f61d3f8edae0dbb21916bb0819a935d
[INFO] running `Command { std: "docker" "start" "-a" "230c62a0c5983131ebfb84df0320fb439f61d3f8edae0dbb21916bb0819a935d", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mavec-a716527164eac1eb)
[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] [stderr]    Doc-tests mavec
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/core.rs - core::to_vec (line 8) ... FAILED
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/core.rs - core::to_vec (line 8) stdout ----
[INFO] [stdout] error: expected `;`, found keyword `let`
[INFO] [stdout]   --> src/core.rs:12:22
[INFO] [stdout]    |
[INFO] [stdout] 12 | use serde_json::Value
[INFO] [stdout]    |                      ^ help: add `;` here
[INFO] [stdout] 13 |
[INFO] [stdout] 14 | let value = json!({
[INFO] [stdout]    | --- unexpected token
[INFO] [stdout] 
[INFO] [stdout] error[E0252]: the name `Value` is defined multiple times
[INFO] [stdout]   --> src/core.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use serde_json::{json, Value};
[INFO] [stdout]    |                        ----- previous import of the type `Value` here
[INFO] [stdout] 12 | use serde_json::Value
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^ `Value` reimported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Value` must be defined only once in the type namespace of this block
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0252`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/core.rs - core::to_vec (line 8)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.14s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "230c62a0c5983131ebfb84df0320fb439f61d3f8edae0dbb21916bb0819a935d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "230c62a0c5983131ebfb84df0320fb439f61d3f8edae0dbb21916bb0819a935d", kill_on_drop: false }`
[INFO] [stdout] 230c62a0c5983131ebfb84df0320fb439f61d3f8edae0dbb21916bb0819a935d
