[INFO] updating cached repository https://github.com/KeyboardFire/xkcd1537-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 54c82318d7c0ca798ced908cc6d76ce19d1f23e1
[INFO] testing KeyboardFire/xkcd1537-rust against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeyboardFire%2Fxkcd1537-rust" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KeyboardFire/xkcd1537-rust on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/KeyboardFire/xkcd1537-rust
[INFO] finished tweaking git repo https://github.com/KeyboardFire/xkcd1537-rust
[INFO] tweaked toml for git repo https://github.com/KeyboardFire/xkcd1537-rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/KeyboardFire/xkcd1537-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 718f111e6ab95da0a0eda24d4703b7f1446c137630b23a5247a47b0cee1a8e78
[INFO] running `"docker" "start" "-a" "718f111e6ab95da0a0eda24d4703b7f1446c137630b23a5247a47b0cee1a8e78"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling xkcd1537 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:95:17
[INFO] [stderr]    |
[INFO] [stderr] 95 |                 try!(write!(fmt, "{}", n));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:98:17
[INFO] [stderr]    |
[INFO] [stderr] 98 |                 try!(write!(fmt, "{}", s));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:101:17
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 try!(write!(fmt, "{:?}", a));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:104:17
[INFO] [stderr]     |
[INFO] [stderr] 104 |                 try!(write!(fmt, "{}", (*o).to_string()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |                 try!(write!(fmt, "{}", (*f).to_string()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:239:45
[INFO] [stderr]     |
[INFO] [stderr] 239 |             Token::XFunction(Function::Wrap(n)) => { },
[INFO] [stderr]     |                                             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `XArray`
[INFO] [stderr]   --> src/main.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     XArray(Vec<Token>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exec_rpn`
[INFO] [stderr]    --> src/main.rs:227:4
[INFO] [stderr]     |
[INFO] [stderr] 227 | fn exec_rpn(rpn: Vec<Token>) -> Vec<Token> {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `"docker" "inspect" "718f111e6ab95da0a0eda24d4703b7f1446c137630b23a5247a47b0cee1a8e78"`
[INFO] running `"docker" "rm" "-f" "718f111e6ab95da0a0eda24d4703b7f1446c137630b23a5247a47b0cee1a8e78"`
[INFO] [stdout] 718f111e6ab95da0a0eda24d4703b7f1446c137630b23a5247a47b0cee1a8e78
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5bd1669f1ce64774b172be316f2f41d28fb122ee88f9bab3ea9b30372ecd091d
[INFO] running `"docker" "start" "-a" "5bd1669f1ce64774b172be316f2f41d28fb122ee88f9bab3ea9b30372ecd091d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling xkcd1537 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:95:17
[INFO] [stderr]    |
[INFO] [stderr] 95 |                 try!(write!(fmt, "{}", n));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:98:17
[INFO] [stderr]    |
[INFO] [stderr] 98 |                 try!(write!(fmt, "{}", s));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:101:17
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 try!(write!(fmt, "{:?}", a));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:104:17
[INFO] [stderr]     |
[INFO] [stderr] 104 |                 try!(write!(fmt, "{}", (*o).to_string()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |                 try!(write!(fmt, "{}", (*f).to_string()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:239:45
[INFO] [stderr]     |
[INFO] [stderr] 239 |             Token::XFunction(Function::Wrap(n)) => { },
[INFO] [stderr]     |                                             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `XArray`
[INFO] [stderr]   --> src/main.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     XArray(Vec<Token>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exec_rpn`
[INFO] [stderr]    --> src/main.rs:227:4
[INFO] [stderr]     |
[INFO] [stderr] 227 | fn exec_rpn(rpn: Vec<Token>) -> Vec<Token> {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "5bd1669f1ce64774b172be316f2f41d28fb122ee88f9bab3ea9b30372ecd091d"`
[INFO] running `"docker" "rm" "-f" "5bd1669f1ce64774b172be316f2f41d28fb122ee88f9bab3ea9b30372ecd091d"`
[INFO] [stdout] 5bd1669f1ce64774b172be316f2f41d28fb122ee88f9bab3ea9b30372ecd091d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stdout] 4cc2745b447629984af1402796d6e443ecc81801d30ee43daad75bb0ae486158
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "4cc2745b447629984af1402796d6e443ecc81801d30ee43daad75bb0ae486158"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:95:17
[INFO] [stderr]    |
[INFO] [stderr] 95 |                 try!(write!(fmt, "{}", n));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:98:17
[INFO] [stderr]    |
[INFO] [stderr] 98 |                 try!(write!(fmt, "{}", s));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:101:17
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 try!(write!(fmt, "{:?}", a));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:104:17
[INFO] [stderr]     |
[INFO] [stderr] 104 |                 try!(write!(fmt, "{}", (*o).to_string()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |                 try!(write!(fmt, "{}", (*f).to_string()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> src/main.rs:239:45
[INFO] [stderr]     |
[INFO] [stderr] 239 |             Token::XFunction(Function::Wrap(n)) => { },
[INFO] [stderr]     |                                             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `XArray`
[INFO] [stderr]   --> src/main.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     XArray(Vec<Token>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exec_rpn`
[INFO] [stderr]    --> src/main.rs:227:4
[INFO] [stderr]     |
[INFO] [stderr] 227 | fn exec_rpn(rpn: Vec<Token>) -> Vec<Token> {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/xkcd1537-ccc834e2119f86d4
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4cc2745b447629984af1402796d6e443ecc81801d30ee43daad75bb0ae486158"`
[INFO] running `"docker" "rm" "-f" "4cc2745b447629984af1402796d6e443ecc81801d30ee43daad75bb0ae486158"`
[INFO] [stdout] 4cc2745b447629984af1402796d6e443ecc81801d30ee43daad75bb0ae486158