[INFO] fetching crate superchan 0.0.7...
[INFO] building superchan-0.0.7 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate superchan 0.0.7 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate superchan 0.0.7 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate superchan 0.0.7
[INFO] finished tweaking crates.io crate superchan 0.0.7
[INFO] tweaked toml for crates.io crate superchan 0.0.7 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bincode v0.0.6
[INFO] [stderr]   Downloaded rustc-serialize v0.2.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff72997cffb03cee0e4654cdab52a0c491711ae3fbd04e7714e9688ac1dc9622
[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" "ff72997cffb03cee0e4654cdab52a0c491711ae3fbd04e7714e9688ac1dc9622", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff72997cffb03cee0e4654cdab52a0c491711ae3fbd04e7714e9688ac1dc9622", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff72997cffb03cee0e4654cdab52a0c491711ae3fbd04e7714e9688ac1dc9622", kill_on_drop: false }`
[INFO] [stdout] ff72997cffb03cee0e4654cdab52a0c491711ae3fbd04e7714e9688ac1dc9622
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7a59c887e54d8e29333e805527632e65f2888b9a4e0bda4d9b2bad01e425644
[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" "e7a59c887e54d8e29333e805527632e65f2888b9a4e0bda4d9b2bad01e425644", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-serialize v0.2.15
[INFO] [stdout] error: invalid suffix `us` for number literal
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.15/src/json.rs:3819:42
[INFO] [stdout]      |
[INFO] [stdout] 3819 |         tree_map.insert("a".to_string(), 1us);
[INFO] [stdout]      |                                          ^^^ invalid suffix `us`
[INFO] [stdout]      |
[INFO] [stdout]      = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid suffix `us` for number literal
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.15/src/json.rs:3823:42
[INFO] [stdout]      |
[INFO] [stdout] 3823 |         hash_map.insert("a".to_string(), 1us);
[INFO] [stdout]      |                                          ^^^ invalid suffix `us`
[INFO] [stdout]      |
[INFO] [stdout]      = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `unicode`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.2.15/src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicode;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "e7a59c887e54d8e29333e805527632e65f2888b9a4e0bda4d9b2bad01e425644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a59c887e54d8e29333e805527632e65f2888b9a4e0bda4d9b2bad01e425644", kill_on_drop: false }`
[INFO] [stdout] e7a59c887e54d8e29333e805527632e65f2888b9a4e0bda4d9b2bad01e425644
