[INFO] cloning repository https://github.com/kmeisthax/retrogram
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kmeisthax/retrogram" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmeisthax%2Fretrogram", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmeisthax%2Fretrogram'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af2533d001e7721afcbd3d66c1e43428d3afc865
[INFO] testing kmeisthax/retrogram against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmeisthax%2Fretrogram" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kmeisthax/retrogram on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kmeisthax/retrogram
[INFO] finished tweaking git repo https://github.com/kmeisthax/retrogram
[INFO] tweaked toml for git repo https://github.com/kmeisthax/retrogram written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/kmeisthax/retrogram already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5639ce3ad4628429c0613bede04480e77fef7e4e794d699e0299466c945c0b9c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5639ce3ad4628429c0613bede04480e77fef7e4e794d699e0299466c945c0b9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5639ce3ad4628429c0613bede04480e77fef7e4e794d699e0299466c945c0b9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5639ce3ad4628429c0613bede04480e77fef7e4e794d699e0299466c945c0b9c", kill_on_drop: false }`
[INFO] [stdout] 5639ce3ad4628429c0613bede04480e77fef7e4e794d699e0299466c945c0b9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f4de775007e2e70cedede70770088f8f217c8d45d2a58d83171f7a36cfa87bf2
[INFO] running `Command { std: "docker" "start" "-a" "f4de775007e2e70cedede70770088f8f217c8d45d2a58d83171f7a36cfa87bf2", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling const_fn v0.4.2
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling array-macro v1.0.5
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]    Compiling mio v0.7.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling num-complex v0.3.0
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling chrono v0.4.15
[INFO] [stderr]    Compiling signal-hook v0.1.16
[INFO] [stderr]    Compiling crossterm v0.17.7
[INFO] [stderr]    Compiling num v0.3.0
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling const-random v0.1.8
[INFO] [stderr]    Compiling ahash v0.4.4
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling serde_plain v0.3.0
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling enum-map-derive v0.4.3
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling enum-map v0.6.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling enumset_derive v0.5.0
[INFO] [stderr]    Compiling enumset v1.0.1
[INFO] [stderr]    Compiling cursive_core v0.1.1
[INFO] [stderr]    Compiling cursive v0.15.0
[INFO] [stderr]    Compiling cursive-tabs v0.5.0
[INFO] [stderr]    Compiling retrogram v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `i32: From<<AR as Architecture>::Offset>` is not satisfied
[INFO] [stdout]    --> src/analysis/prerequisite.rs:289:48
[INFO] [stdout]     |
[INFO] [stdout] 289 |                     let ucount = count.clone().try_into().unwrap_or(0);
[INFO] [stdout]     |                                                ^^^^^^^^ the trait `From<<AR as Architecture>::Offset>` is not implemented for `i32`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required because of the requirements on the impl of `Into<i32>` for `<AR as Architecture>::Offset`
[INFO] [stdout]     = note: required because of the requirements on the impl of `TryFrom<<AR as Architecture>::Offset>` for `i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `retrogram`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f4de775007e2e70cedede70770088f8f217c8d45d2a58d83171f7a36cfa87bf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4de775007e2e70cedede70770088f8f217c8d45d2a58d83171f7a36cfa87bf2", kill_on_drop: false }`
[INFO] [stdout] f4de775007e2e70cedede70770088f8f217c8d45d2a58d83171f7a36cfa87bf2