[INFO] cloning repository https://github.com/Tevinthuku/coding_challenges_fyi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Tevinthuku/coding_challenges_fyi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTevinthuku%2Fcoding_challenges_fyi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTevinthuku%2Fcoding_challenges_fyi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 617f7be86b95e08127f06d586164cf0ba5cfd69a
[INFO] testing Tevinthuku/coding_challenges_fyi against try#b8e88e5ddf5521a9f43ee3f62a702388c713e4bb for pr-155114
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTevinthuku%2Fcoding_challenges_fyi" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Tevinthuku/coding_challenges_fyi
[INFO] finished tweaking git repo https://github.com/Tevinthuku/coding_challenges_fyi
[INFO] tweaked toml for git repo https://github.com/Tevinthuku/coding_challenges_fyi written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Tevinthuku/coding_challenges_fyi on toolchain b8e88e5ddf5521a9f43ee3f62a702388c713e4bb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Tevinthuku/coding_challenges_fyi 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" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e59c95861cfaef3174758a3d2fc28be6a200e9c165c1e7a60970655306b029cd
[INFO] running `Command { std: "docker" "start" "-a" "e59c95861cfaef3174758a3d2fc28be6a200e9c165c1e7a60970655306b029cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e59c95861cfaef3174758a3d2fc28be6a200e9c165c1e7a60970655306b029cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e59c95861cfaef3174758a3d2fc28be6a200e9c165c1e7a60970655306b029cd", kill_on_drop: false }`
[INFO] [stdout] e59c95861cfaef3174758a3d2fc28be6a200e9c165c1e7a60970655306b029cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eebd4123605a7b249ece03cb1650e51edb28b4bbee5ab011380906373c4e0212
[INFO] running `Command { std: "docker" "start" "-a" "eebd4123605a7b249ece03cb1650e51edb28b4bbee5ab011380906373c4e0212", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
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[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> memcached/src/db.rs:81:17
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<String, Content> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<'_, String, Content> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
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[INFO] [stderr]    Compiling actix-web v4.9.0
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.27
[INFO] [stderr]    Compiling actix-cors v0.7.0
[INFO] [stderr]    Compiling ratelimiter v0.1.0 (/opt/rustwide/workdir/ratelimiter)
[INFO] [stderr]    Compiling load-balancer v0.1.0 (/opt/rustwide/workdir/load-balancer)
[INFO] [stderr]    Compiling http-load-tester v0.1.0 (/opt/rustwide/workdir/http-load-tester)
[INFO] [stdout] warning: unused import: `command`
[INFO] [stdout]  --> http-load-tester/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::{command, Parser};
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling server v0.1.0 (/opt/rustwide/workdir/url-shortener/server)
[INFO] [stdout] warning: unused import: `error`
[INFO] [stdout]  --> load-balancer/src/bin/load-balancer/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | use log::{error, info, warn};
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 23s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: redis v0.25.4, sqlx-postgres v0.7.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "eebd4123605a7b249ece03cb1650e51edb28b4bbee5ab011380906373c4e0212", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eebd4123605a7b249ece03cb1650e51edb28b4bbee5ab011380906373c4e0212", kill_on_drop: false }`
[INFO] [stdout] eebd4123605a7b249ece03cb1650e51edb28b4bbee5ab011380906373c4e0212
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 359cf3b16de3268c9b650dfdc151c12e41a8dded7914463a8db0d0293a6fd36e
[INFO] running `Command { std: "docker" "start" "-a" "359cf3b16de3268c9b650dfdc151c12e41a8dded7914463a8db0d0293a6fd36e", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.25
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling relative-path v1.9.3
[INFO] [stderr]    Compiling futures-timer v3.0.3
[INFO] [stderr]    Compiling huffman-compression v0.1.0 (/opt/rustwide/workdir/huffman-compression)
[INFO] [stderr]    Compiling memcached v0.1.0 (/opt/rustwide/workdir/memcached)
[INFO] [stderr]    Compiling load-balancer v0.1.0 (/opt/rustwide/workdir/load-balancer)
[INFO] [stderr]    Compiling ratelimiter v0.1.0 (/opt/rustwide/workdir/ratelimiter)
[INFO] [stderr]    Compiling shell v0.1.0 (/opt/rustwide/workdir/shell)
[INFO] [stderr]    Compiling sort-tool v0.1.0 (/opt/rustwide/workdir/sort-tool)
[INFO] [stderr]    Compiling server v0.1.0 (/opt/rustwide/workdir/url-shortener/server)
[INFO] [stderr]    Compiling http-load-tester v0.1.0 (/opt/rustwide/workdir/http-load-tester)
[INFO] [stdout] warning: unused import: `command`
[INFO] [stdout]  --> http-load-tester/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::{command, Parser};
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling web_server v0.1.0 (/opt/rustwide/workdir/web-server)
[INFO] [stdout] warning: unused import: `error`
[INFO] [stdout]  --> load-balancer/src/bin/load-balancer/mod.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | use log::{error, info, warn};
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ccwc v0.1.0 (/opt/rustwide/workdir/ccwc)
[INFO] [stderr]    Compiling cut v0.1.0 (/opt/rustwide/workdir/cut)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> memcached/src/db.rs:81:17
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<String, Content> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<'_, String, Content> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling rstest_macros v0.18.2
[INFO] [stderr]    Compiling rstest v0.18.2
[INFO] [stderr]    Compiling redis-server v0.1.0 (/opt/rustwide/workdir/redis-server)
[INFO] [stderr]    Compiling json-parser v0.1.0 (/opt/rustwide/workdir/json-parser)
[INFO] [stderr]    Compiling diff-tool v0.1.0 (/opt/rustwide/workdir/diff-tool)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.82s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: redis v0.25.4, sqlx-postgres v0.7.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "359cf3b16de3268c9b650dfdc151c12e41a8dded7914463a8db0d0293a6fd36e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "359cf3b16de3268c9b650dfdc151c12e41a8dded7914463a8db0d0293a6fd36e", kill_on_drop: false }`
[INFO] [stdout] 359cf3b16de3268c9b650dfdc151c12e41a8dded7914463a8db0d0293a6fd36e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ed6db127f387e607e280a2026f516310f8e871e85c711b855c07ff18db484284
[INFO] running `Command { std: "docker" "start" "-a" "ed6db127f387e607e280a2026f516310f8e871e85c711b855c07ff18db484284", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `error`
[INFO] [stderr]  --> load-balancer/src/bin/load-balancer/mod.rs:8:11
[INFO] [stderr]   |
[INFO] [stderr] 8 | use log::{error, info, warn};
[INFO] [stderr]   |           ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> memcached/src/db.rs:81:17
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<String, Content> {
[INFO] [stderr]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn iter(&self) -> linked_hash_map::Iter<'_, String, Content> {
[INFO] [stderr]    |                                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: `load-balancer` (bin "load-balancer" test) generated 1 warning (run `cargo fix --bin "load-balancer" -p load-balancer --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `memcached` (bin "memcached" test) generated 1 warning (run `cargo fix --bin "memcached" -p memcached --tests` to apply 1 suggestion)
[INFO] [stderr] warning: unused import: `command`
[INFO] [stderr]  --> http-load-tester/src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | use clap::{command, Parser};
[INFO] [stderr]   |            ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `http-load-tester` (bin "http-load-tester" test) generated 1 warning (run `cargo fix --bin "http-load-tester" -p http-load-tester --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: redis v0.25.4, sqlx-postgres v0.7.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/ccwc-9fd9dd1ae0caebdd)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cut-97d311afe1348156)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/diff_tool-ed9dd49b1b38335e)
[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] [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] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_least_common_sequence::case_1 ... ok
[INFO] [stdout] test tests::test_least_common_sequence_for_many_2 ... ok
[INFO] [stdout] test tests::test_least_common_sequence_for_many ... ok
[INFO] [stdout] test tests::test_differences ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/http_load_tester-1d6ae7af16d266e5)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/huffman_compression-e74732ac3b207079)
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `-p huffman-compression --bin huffman-compression`
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test prefix_code_table::tests::test_code_generation ... ok
[INFO] [stdout] test encode_decode::tests::test_encoding_decoding ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- encode_decode::tests::test_encoding_decoding stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'encode_decode::tests::test_encoding_decoding' (42) panicked at huffman-compression/src/encode_decode.rs:189:52:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x61923e29919a - std[fce30c26ee6459b]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x61923e29919a - std[fce30c26ee6459b]::backtrace_rs::backtrace::trace_unsynchronized::<std[fce30c26ee6459b]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x61923e29919a - std[fce30c26ee6459b]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x61923e29919a - <<std[fce30c26ee6459b]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[d17f6591d688f3bd]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x61923e2ad85a - <core[d17f6591d688f3bd]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x61923e2ad85a - core[d17f6591d688f3bd]::fmt::write
[INFO] [stdout]    6:     0x61923e29da92 - std[fce30c26ee6459b]::io::default_write_fmt::<alloc[dad09f3a48280dba]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/io/mod.rs:621:11
[INFO] [stdout]    7:     0x61923e29da92 - <alloc[dad09f3a48280dba]::vec::Vec<u8> as std[fce30c26ee6459b]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/io/mod.rs:1976:13
[INFO] [stdout]    8:     0x61923e277c6f - <std[fce30c26ee6459b]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x61923e277c6f - std[fce30c26ee6459b]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x61923e291229 - std[fce30c26ee6459b]::panicking::default_hook
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x61923e227cfc - <alloc[dad09f3a48280dba]::boxed::Box<dyn for<'a, 'b> core[d17f6591d688f3bd]::ops::function::Fn<(&'a std[fce30c26ee6459b]::panic::PanicHookInfo<'b>,), Output = ()> + core[d17f6591d688f3bd]::marker::Sync + core[d17f6591d688f3bd]::marker::Send> as core[d17f6591d688f3bd]::ops::function::Fn<(&std[fce30c26ee6459b]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/alloc/src/boxed.rs:2285:9
[INFO] [stdout]   12:     0x61923e227cfc - test[9653f4f1d2ca1489]::test_main_inner::<test[9653f4f1d2ca1489]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/test/src/lib.rs:155:21
[INFO] [stdout]   13:     0x61923e2913e2 - <alloc[dad09f3a48280dba]::boxed::Box<dyn for<'a, 'b> core[d17f6591d688f3bd]::ops::function::Fn<(&'a std[fce30c26ee6459b]::panic::PanicHookInfo<'b>,), Output = ()> + core[d17f6591d688f3bd]::marker::Sync + core[d17f6591d688f3bd]::marker::Send> as core[d17f6591d688f3bd]::ops::function::Fn<(&std[fce30c26ee6459b]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/alloc/src/boxed.rs:2285:9
[INFO] [stdout]   14:     0x61923e2913e2 - std[fce30c26ee6459b]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x61923e277d28 - std[fce30c26ee6459b]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x61923e26cde9 - std[fce30c26ee6459b]::sys::backtrace::__rust_end_short_backtrace::<std[fce30c26ee6459b]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x61923e278a3d - __rustc[de152adb51f02556]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x61923e2adfec - core[d17f6591d688f3bd]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x61923e2add62 - core[d17f6591d688f3bd]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x61923e1dea00 - <core[d17f6591d688f3bd]::result::Result<(), alloc[dad09f3a48280dba]::boxed::Box<dyn core[d17f6591d688f3bd]::error::Error>>>::unwrap
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x61923e1dea00 - huffman_compression[2226735dd0e7044]::encode_decode::tests::test_encoding_decoding
[INFO] [stdout]                                at /opt/rustwide/workdir/huffman-compression/src/encode_decode.rs:189:52
[INFO] [stdout]   22:     0x61923e1dcca7 - huffman_compression[2226735dd0e7044]::encode_decode::tests::test_encoding_decoding::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/huffman-compression/src/encode_decode.rs:185:32
[INFO] [stdout]   23:     0x61923e1d9516 - <huffman_compression[2226735dd0e7044]::encode_decode::tests::test_encoding_decoding::{closure#0} as core[d17f6591d688f3bd]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x61923e21afdb - <fn() -> core[d17f6591d688f3bd]::result::Result<(), alloc[dad09f3a48280dba]::string::String> as core[d17f6591d688f3bd]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x61923e21afdb - test[9653f4f1d2ca1489]::__rust_begin_short_backtrace::<core[d17f6591d688f3bd]::result::Result<(), alloc[dad09f3a48280dba]::string::String>, fn() -> core[d17f6591d688f3bd]::result::Result<(), alloc[dad09f3a48280dba]::string::String>>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/test/src/lib.rs:724:18
[INFO] [stdout]   26:     0x61923e2287cb - test[9653f4f1d2ca1489]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/test/src/lib.rs:747:74
[INFO] [stdout]   27:     0x61923e2287cb - <core[d17f6591d688f3bd]::panic::unwind_safe::AssertUnwindSafe<test[9653f4f1d2ca1489]::run_test_in_process::{closure#0}> as core[d17f6591d688f3bd]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   28:     0x61923e2287cb - std[fce30c26ee6459b]::panicking::catch_unwind::do_call::<core[d17f6591d688f3bd]::panic::unwind_safe::AssertUnwindSafe<test[9653f4f1d2ca1489]::run_test_in_process::{closure#0}>, core[d17f6591d688f3bd]::result::Result<(), alloc[dad09f3a48280dba]::string::String>>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x61923e2287cb - std[fce30c26ee6459b]::panicking::catch_unwind::<core[d17f6591d688f3bd]::result::Result<(), alloc[dad09f3a48280dba]::string::String>, core[d17f6591d688f3bd]::panic::unwind_safe::AssertUnwindSafe<test[9653f4f1d2ca1489]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x61923e2287cb - std[fce30c26ee6459b]::panic::catch_unwind::<core[d17f6591d688f3bd]::panic::unwind_safe::AssertUnwindSafe<test[9653f4f1d2ca1489]::run_test_in_process::{closure#0}>, core[d17f6591d688f3bd]::result::Result<(), alloc[dad09f3a48280dba]::string::String>>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x61923e2287cb - test[9653f4f1d2ca1489]::run_test_in_process
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/test/src/lib.rs:747:27
[INFO] [stdout]   32:     0x61923e2287cb - test[9653f4f1d2ca1489]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/test/src/lib.rs:668:43
[INFO] [stdout]   33:     0x61923e221ee4 - test[9653f4f1d2ca1489]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/test/src/lib.rs:698:41
[INFO] [stdout]   34:     0x61923e221ee4 - std[fce30c26ee6459b]::sys::backtrace::__rust_begin_short_backtrace::<test[9653f4f1d2ca1489]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x61923e22b3d2 - std[fce30c26ee6459b]::thread::lifecycle::spawn_unchecked::<test[9653f4f1d2ca1489]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   36:     0x61923e22b3d2 - <core[d17f6591d688f3bd]::panic::unwind_safe::AssertUnwindSafe<std[fce30c26ee6459b]::thread::lifecycle::spawn_unchecked<test[9653f4f1d2ca1489]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[d17f6591d688f3bd]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   37:     0x61923e22b3d2 - std[fce30c26ee6459b]::panicking::catch_unwind::do_call::<core[d17f6591d688f3bd]::panic::unwind_safe::AssertUnwindSafe<std[fce30c26ee6459b]::thread::lifecycle::spawn_unchecked<test[9653f4f1d2ca1489]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x61923e22b3d2 - std[fce30c26ee6459b]::panicking::catch_unwind::<(), core[d17f6591d688f3bd]::panic::unwind_safe::AssertUnwindSafe<std[fce30c26ee6459b]::thread::lifecycle::spawn_unchecked<test[9653f4f1d2ca1489]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x61923e22b3d2 - std[fce30c26ee6459b]::panic::catch_unwind::<core[d17f6591d688f3bd]::panic::unwind_safe::AssertUnwindSafe<std[fce30c26ee6459b]::thread::lifecycle::spawn_unchecked<test[9653f4f1d2ca1489]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x61923e22b3d2 - std[fce30c26ee6459b]::thread::lifecycle::spawn_unchecked::<test[9653f4f1d2ca1489]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   41:     0x61923e22b3d2 - <std[fce30c26ee6459b]::thread::lifecycle::spawn_unchecked<test[9653f4f1d2ca1489]::run_test::{closure#1}, ()>::{closure#1} as core[d17f6591d688f3bd]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x61923e29874f - <alloc[dad09f3a48280dba]::boxed::Box<dyn core[d17f6591d688f3bd]::ops::function::FnOnce<(), Output = ()> + core[d17f6591d688f3bd]::marker::Send> as core[d17f6591d688f3bd]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/alloc/src/boxed.rs:2271:9
[INFO] [stdout]   43:     0x61923e29874f - <std[fce30c26ee6459b]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   44:     0x7e1518db9aa4 - <unknown>
[INFO] [stdout]   45:     0x7e1518e46a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     encode_decode::tests::test_encoding_decoding
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ed6db127f387e607e280a2026f516310f8e871e85c711b855c07ff18db484284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed6db127f387e607e280a2026f516310f8e871e85c711b855c07ff18db484284", kill_on_drop: false }`
[INFO] [stdout] ed6db127f387e607e280a2026f516310f8e871e85c711b855c07ff18db484284
