[INFO] fetching crate mem_viewer 0.3.0...
[INFO] testing mem_viewer-0.3.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate mem_viewer 0.3.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate mem_viewer 0.3.0
[INFO] finished tweaking crates.io crate mem_viewer 0.3.0
[INFO] tweaked toml for crates.io crate mem_viewer 0.3.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mem_viewer 0.3.0 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 mem_viewer 0.3.0 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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa06e3cc2d1cf4591adc0c2f8bfb669c1e804ec81c4cec5868357209a8c0cd34
[INFO] running `Command { std: "docker" "start" "-a" "fa06e3cc2d1cf4591adc0c2f8bfb669c1e804ec81c4cec5868357209a8c0cd34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa06e3cc2d1cf4591adc0c2f8bfb669c1e804ec81c4cec5868357209a8c0cd34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa06e3cc2d1cf4591adc0c2f8bfb669c1e804ec81c4cec5868357209a8c0cd34", kill_on_drop: false }`
[INFO] [stdout] fa06e3cc2d1cf4591adc0c2f8bfb669c1e804ec81c4cec5868357209a8c0cd34
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 082bd2d0bc133e700160ecf15ced134ce39bc1546d3d8bd0a3e9bc1e235ece7b
[INFO] running `Command { std: "docker" "start" "-a" "082bd2d0bc133e700160ecf15ced134ce39bc1546d3d8bd0a3e9bc1e235ece7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.85
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling serde_derive v1.0.203
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling mem_viewer v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.09s
[INFO] running `Command { std: "docker" "inspect" "082bd2d0bc133e700160ecf15ced134ce39bc1546d3d8bd0a3e9bc1e235ece7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "082bd2d0bc133e700160ecf15ced134ce39bc1546d3d8bd0a3e9bc1e235ece7b", kill_on_drop: false }`
[INFO] [stdout] 082bd2d0bc133e700160ecf15ced134ce39bc1546d3d8bd0a3e9bc1e235ece7b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef6d671dc5a29382d7fbc64b20cc74bc2ccc91aad1b13faf0305729c3b68f49d
[INFO] running `Command { std: "docker" "start" "-a" "ef6d671dc5a29382d7fbc64b20cc74bc2ccc91aad1b13faf0305729c3b68f49d", kill_on_drop: false }`
[INFO] [stderr]    Compiling mem_viewer v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "ef6d671dc5a29382d7fbc64b20cc74bc2ccc91aad1b13faf0305729c3b68f49d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef6d671dc5a29382d7fbc64b20cc74bc2ccc91aad1b13faf0305729c3b68f49d", kill_on_drop: false }`
[INFO] [stdout] ef6d671dc5a29382d7fbc64b20cc74bc2ccc91aad1b13faf0305729c3b68f49d
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 28aba8baa413fd3b20a01aad4b168487de2121312891e4bf1a2ca3ea1a06f0de
[INFO] running `Command { std: "docker" "start" "-a" "28aba8baa413fd3b20a01aad4b168487de2121312891e4bf1a2ca3ea1a06f0de", 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/mem_viewer-4fea94db10c75ccd)
[INFO] [stderr]    Doc-tests mem_viewer
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::box_viewer ... ok
[INFO] [stdout] test tests::f32_viewer ... ok
[INFO] [stdout] test tests::ptr_viewer ... ok
[INFO] [stdout] test tests::functype_viewer ... ok
[INFO] [stdout] test tests::str_viewer ... ok
[INFO] [stdout] test tests::u16_viewer ... ok
[INFO] [stdout] test tests::struct_viewer ... ok
[INFO] [stdout] test tests::utf8_viewer ... ok
[INFO] [stdout] test tests::vec_of_box_viewer ... ok
[INFO] [stdout] test tests::vec_viewer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - safe_view_mem (line 891) ... FAILED
[INFO] [stdout] test src/lib.rs - view_mem (line 1057) ... ok
[INFO] [stdout] test src/lib.rs - (line 100) ... ok
[INFO] [stdout] test src/lib.rs - (line 16) ... ok
[INFO] [stdout] test src/lib.rs - safe_view_mem (line 905) ... ok
[INFO] [stdout] test src/lib.rs - (line 54) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - safe_view_mem (line 891) stdout ----
[INFO] [stdout] error: cannot find derive macro `Serialize` in this scope
[INFO] [stdout]    --> src/lib.rs:892:10
[INFO] [stdout]     |
[INFO] [stdout] 892 | #[derive(Serialize)]
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these derive macros
[INFO] [stdout]     |
[INFO] [stdout] 891 + use mem_viewer::Serialize;
[INFO] [stdout]     |
[INFO] [stdout] 891 + use serde::Serialize;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - safe_view_mem (line 891)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 5 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.53s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "28aba8baa413fd3b20a01aad4b168487de2121312891e4bf1a2ca3ea1a06f0de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28aba8baa413fd3b20a01aad4b168487de2121312891e4bf1a2ca3ea1a06f0de", kill_on_drop: false }`
[INFO] [stdout] 28aba8baa413fd3b20a01aad4b168487de2121312891e4bf1a2ca3ea1a06f0de